diff --git a/.github/workflows/build-standalone.yml b/.github/workflows/build-standalone.yml
index 8ff5ada..85f978e 100644
--- a/.github/workflows/build-standalone.yml
+++ b/.github/workflows/build-standalone.yml
@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         GO_VERSION:
-          - 1.24.1
+          - 1.24.4
 
     steps:
       - name: Checkout
diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index 12eda63..a8e081e 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         GO_VERSION:
-          - 1.24.1
+          - 1.24.4
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a7c4c2e..227cab6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         GO_VERSION:
-          - 1.24.1
+          - 1.24.4
 
     steps:
       - name: Checkout
diff --git a/build/Dockerfile-boulder b/build/Dockerfile-boulder
index 65e6935..1a67659 100644
--- a/build/Dockerfile-boulder
+++ b/build/Dockerfile-boulder
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM letsencrypt/boulder-tools:go1.24.1_2025-04-30 AS boulder-tools
+FROM letsencrypt/boulder-tools:go1.24.4_2025-06-06 AS boulder-tools
 
 FROM ubuntu:noble
 
diff --git a/build/Dockerfile-control b/build/Dockerfile-control
index 5860f95..82031b4 100644
--- a/build/Dockerfile-control
+++ b/build/Dockerfile-control
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM letsencrypt/boulder-tools:go1.24.1_2025-04-30 AS boulder-tools
+FROM letsencrypt/boulder-tools:go1.24.4_2025-06-06 AS boulder-tools
 
 FROM ubuntu:noble AS builder
 
diff --git a/build/build.sh b/build/build.sh
index a239d0d..130bac2 100755
--- a/build/build.sh
+++ b/build/build.sh
@@ -8,7 +8,7 @@ TMP_DIR=$(pwd)/tmp
 rm -rf $TMP_DIR && mkdir -p $TMP_DIR/{admin,bin,logs,src}
 
 boulderDir=$TMP_DIR/src
-boulderTag="release-2025-05-27"
+boulderTag="v0.20250707.0"
 boulderUrl="https://github.com/letsencrypt/boulder/"
 cloneDir=$(pwd)/..
 
diff --git a/build/docker-compose.yml b/build/docker-compose.yml
index cf6585c..71ca7e0 100644
--- a/build/docker-compose.yml
+++ b/build/docker-compose.yml
@@ -12,9 +12,9 @@ services:
         GO_VERSION: 1.24.1
     environment:
       # To solve HTTP-01 and TLS-ALPN-01 challenges, change the IP in FAKE_DNS
-      # to the IP address where your ACME client's solver is listening.
-      # FAKE_DNS: 172.17.0.1
-      FAKE_DNS: 10.77.77.77
+      # to the IP address where your ACME client's solver is listening. This is
+      # pointing at the boulder service's "public" IP, where challtestsrv is.
+      FAKE_DNS: 64.112.117.122
       BOULDER_CONFIG_DIR: labca/config
       GOCACHE: /boulder/.gocache/go-build
       GOFLAGS: -mod=vendor
@@ -26,12 +26,10 @@ services:
     networks:
       bouldernet:
         ipv4_address: 10.77.77.77
-      integrationtestnet:
-        ipv4_address: 10.88.88.88
-      redisnet:
-        ipv4_address: 10.33.33.33
-      consulnet:
-        ipv4_address: 10.55.55.55
+      publicnet:
+        ipv4_address: 64.112.117.122
+      publicnet2:
+        ipv4_address: 64.112.117.134
     # Use consul as a backup to Docker's embedded DNS server. If there's a name
     # Docker's DNS server doesn't know about, it will forward the query to this
     # IP (running consul).
@@ -40,15 +38,17 @@ services:
     # are configured via the ServerAddress field of cmd.GRPCClientConfig.
     # TODO: Remove this when ServerAddress is deprecated in favor of SRV records
     # and DNSAuthority.
-    dns: 10.55.55.10
+    dns: 10.77.77.10
     extra_hosts:
-      # Allow the boulder container to be reached as "ca.example.org", so that
-      # we can put that name inside our integration test certs (e.g. as a crl
+      # Allow the boulder container to be reached as "ca.example.org", so we
+      # can put that name inside our integration test certs (e.g. as a crl
       # url) and have it look like a publicly-accessible name.
-      - "ca.example.org:10.77.77.77"
+      # TODO(#8215): Move s3-test-srv to a separate service.
+      - "ca.example.org:64.112.117.122"
       # Allow the boulder container to be reached as "integration.trust", for
       # similar reasons, but intended for use as a SAN rather than a CRLDP.
-      - "integration.trust:10.77.77.77"
+      # TODO(#8215): Move observer's probe target to a separate service.
+      - "integration.trust:64.112.117.122"
     ports:
       - 4001:4001 # ACMEv2
       - 4002:4002 # OCSP
@@ -69,7 +69,7 @@ services:
     restart: always
 
   bmysql:
-    image: mariadb:10.5
+    image: mariadb:10.6.22
     volumes:
       - dbdata:/var/lib/mysql
     networks:
@@ -89,12 +89,13 @@ services:
   bredis:
     image: redis:6.2.7
     volumes:
+      - ./test/:/test/:cached
       - boulder_data:/opt/boulder/labca
       - certificates:/opt/boulder/labca/certs
     command: redis-server /opt/boulder/labca/redis-ratelimits.config
     networks:
-      redisnet:
-        ipv4_address: 10.33.33.4
+      bouldernet:
+        ipv4_address: 10.77.77.4
     restart: always
 
   bconsul:
@@ -105,8 +106,6 @@ services:
       - boulder_data:/opt/boulder/labca
       - certificates:/opt/boulder/labca/certs
     networks:
-      consulnet:
-        ipv4_address: 10.55.55.10
       bouldernet:
         ipv4_address: 10.77.77.10
     command: "consul agent -dev -config-format=hcl -config-file=/opt/boulder/labca/consul/config.hcl"
@@ -182,8 +181,7 @@ services:
   bpkimetal:
     image: ghcr.io/pkimetal/pkimetal:v1.20.0
     networks:
-      bouldernet:
-        ipv4_address: 10.77.77.9
+      - bouldernet
     restart: always
 
 volumes:
@@ -199,17 +197,34 @@ volumes:
   certificates:
 
 networks:
-  # This network is primarily used for boulder services. It is also used by
-  # challtestsrv, which is used in the integration tests.
+  # This network represents the data-center internal network. It is used for
+  # boulder services and their infrastructure, such as consul, mariadb, and
+  # redis.
   bouldernet:
     driver: bridge
     ipam:
       driver: default
       config:
         - subnet: 10.77.77.0/24
+          # Only issue DHCP addresses in the top half of the range, to avoid
+          # conflict with static addresses.
+          ip_range: 10.77.77.128/25
+
+  # This network represents the public internet. It uses a real public IP space
+  # (that Let's Encrypt controls) so that our integration tests are happy to
+  # validate and issue for it. It is used by challtestsrv, which binds to
+  # 64.112.117.122:80 and :443 for its HTTP-01 challenge responder.
+  #
+  # TODO(#8215): Put akamai-test-srv and s3-test-srv on this network.
+  publicnet:
+    driver: bridge
+    ipam:
+      driver: default
+      config:
+        - subnet: 64.112.117.0/25
 
   # This network is used for two things in the integration tests:
-  #  - challtestsrv binds to 10.88.88.88:443 for its tls-alpn-01 challenge
+  #  - challtestsrv binds to 64.112.117.134:443 for its tls-alpn-01 challenge
   #    responder, to avoid interfering with the HTTPS port used for testing
   #    HTTP->HTTPS redirects during http-01 challenges. Note: this could
   #    probably be updated in the future so that challtestsrv can handle
@@ -217,24 +232,13 @@ networks:
   #  - test/v2_integration.py has some test cases that start their own HTTP
   #    server instead of relying on challtestsrv, because they want very
   #    specific behavior. For these cases, v2_integration.py creates a Python
-  #    HTTP server and binds it to 10.88.88.88:80.
-  integrationtestnet:
+  #    HTTP server and binds it to 64.112.117.134:80.
+  #
+  # TODO(#8215): Deprecate this network, replacing it with individual IPs within
+  # the existing publicnet.
+  publicnet2:
     driver: bridge
     ipam:
       driver: default
       config:
-        - subnet: 10.88.88.0/24
-
-  redisnet:
-    driver: bridge
-    ipam:
-      driver: default
-      config:
-        - subnet: 10.33.33.0/24
-
-  consulnet:
-    driver: bridge
-    ipam:
-      driver: default
-      config:
-        - subnet: 10.55.55.0/24
+        - subnet: 64.112.117.128/25
diff --git a/build/tmp.patch b/build/tmp.patch
index 929dea4..214ae34 100644
--- a/build/tmp.patch
+++ b/build/tmp.patch
@@ -1,5 +1,5 @@
 diff --git a/docker-compose.yml b/docker-compose.yml
-index e981e30ec..cf6585c65 100644
+index b9a8ac069..71ca7e0be 100644
 --- a/docker-compose.yml
 +++ b/docker-compose.yml
 @@ -4,7 +4,7 @@ services:
@@ -27,17 +27,17 @@ index e981e30ec..cf6585c65 100644
      networks:
        bouldernet:
          ipv4_address: 10.77.77.77
-@@ -90,7 +89,8 @@ services:
-   bredis:
+@@ -91,7 +90,8 @@ services:
      image: redis:6.2.7
      volumes:
+       - ./test/:/test/:cached
 -      - /home/labca/boulder_labca:/opt/boulder/labca
 +      - boulder_data:/opt/boulder/labca
 +      - certificates:/opt/boulder/labca/certs
      command: redis-server /opt/boulder/labca/redis-ratelimits.config
      networks:
-       redisnet:
-@@ -102,35 +102,37 @@ services:
+       bouldernet:
+@@ -103,33 +103,35 @@ services:
      depends_on:
        - control
      volumes:
@@ -45,8 +45,6 @@ index e981e30ec..cf6585c65 100644
 +      - boulder_data:/opt/boulder/labca
 +      - certificates:/opt/boulder/labca/certs
      networks:
-       consulnet:
-         ipv4_address: 10.55.55.10
        bouldernet:
          ipv4_address: 10.77.77.10
      command: "consul agent -dev -config-format=hcl -config-file=/opt/boulder/labca/consul/config.hcl"
@@ -86,7 +84,7 @@ index e981e30ec..cf6585c65 100644
      logging:
        driver: "json-file"
        options:
-@@ -147,30 +149,28 @@ services:
+@@ -146,30 +148,28 @@ services:
        - 80:80
        - 443:443
      volumes:
@@ -131,7 +129,7 @@ index e981e30ec..cf6585c65 100644
      expose:
        - 3030
      environment:
-@@ -188,6 +188,15 @@ services:
+@@ -186,6 +186,15 @@ services:
  
  volumes:
    dbdata:
@@ -146,4 +144,4 @@ index e981e30ec..cf6585c65 100644
 +  certificates:
  
  networks:
-   # This network is primarily used for boulder services. It is also used by
+   # This network represents the data-center internal network. It is used for
diff --git a/commander b/commander
index e592ec4..ae475aa 100755
--- a/commander
+++ b/commander
@@ -167,8 +167,6 @@ case $txt in
     ;;
 "test-email")
     read recipient
-    cd /opt/boulder
-    docker compose exec boulder bin/boulder mail-tester --config labca/config/expiration-mailer.json $recipient 2>&1
     ;;
 "boulder-start")
     cd /opt/boulder
diff --git a/dev/versions b/dev/versions
index 7f531b7..8f89cbd 100755
--- a/dev/versions
+++ b/dev/versions
@@ -114,7 +114,7 @@ grep GO_VERSION ../boulder/docker-compose.yml | sed -e "s/\s*GO_VERSION:/    /"
 colorGoVersion2 build/docker-compose.yml $goversion
 echo
 
-db_migrs=$(ls -1 ../boulder/sa/db/boulder_sa/ | grep -v 20240304000000_CertificateProfiles.sql | grep -v 20250115000000_AuthzProfiles.sql | wc -l)
+db_migrs=$(ls -1 ../boulder/sa/db/boulder_sa/ | grep -v 20240304000000_CertificateProfiles.sql | grep -v 20250115000000_AuthzProfiles.sql | grep -v 20250519000000_NullRegistrationsContact.sql | wc -l)
 db_patches=$(ls -1 ../labca/patches/db_migrations* | wc -l)
 echo -n "Database migrations "
 colorEqual $db_migrs $db_patches
diff --git a/gui/apply-boulder b/gui/apply-boulder
index bd384e2..01b7bf0 100755
--- a/gui/apply-boulder
+++ b/gui/apply-boulder
@@ -67,7 +67,6 @@ perl -i -p0e "s/(\"dnsStaticResolvers\": \[\n).*?(\s+\],)/\1\t\t\t\"$PKI_DNS\"\2
 perl -i -p0e "s/(\"dnsStaticResolvers\": \[\n).*?(\s+\],)/\1\t\t\t\"$PKI_DNS\"\2/igs" config/remoteva-c.json
 perl -i -p0e "s/(\"dnsStaticResolvers\": \[\n).*?(\s+\],)/\1\t\t\t\"$PKI_DNS\"\2/igs" config/va.json
 perl -i -p0e "s/(\"dnsStaticResolvers\": \[\n).*?(\s+\],)/\1\t\t\t\"$PKI_DNS\"\2/igs" config/bad-key-revoker.json
-perl -i -p0e "s/(\"dnsStaticResolvers\": \[\n).*?(\s+\],)/\1\t\t\t\"$PKI_DNS\"\2/igs" config/expiration-mailer.json
 
 # Disable DOH as long as it is a feature...
 sed -i -e "s/\(\"DOH\":\s*\).*/\1false/" config/remoteva-a.json
@@ -197,7 +196,6 @@ if [ "$PKI_EXTENDED_TIMEOUT" == "1" ]; then
     sed -i -e "s/\"timeout\": \"15s\"/\"timeout\": \"30s\"/" config/admin.json
     sed -i -e "s/\"timeout\": \"15s\"/\"timeout\": \"30s\"/" config/wfe2.json
     sed -i -e "s/\"timeout\": \"20s\"/\"timeout\": \"40s\"/" config/wfe2.json
-    sed -i -e "s/\"timeout\": \"15s\"/\"timeout\": \"30s\"/" config/expiration-mailer.json
     sed -i -e "s/\"timeout\": \"15s\"/\"timeout\": \"30s\"/" config/ra.json
     sed -i -e "s/\"timeout\": \"20s\"/\"timeout\": \"40s\"/" config/ra.json
     sed -i -e "s/\"timeout\": \"15s\"/\"timeout\": \"30s\"/" config/crl-storer.json
@@ -214,16 +212,6 @@ sed -i -e "s/\"port\": \".*\"/\"port\": \"$PKI_EMAIL_PORT\"/" config/bad-key-rev
 sed -i -e "s/\"username\": \".*\"/\"username\": \"$PKI_EMAIL_USER\"/" config/bad-key-revoker.json
 sed -i -e "s/\"from\": \".*\"/\"from\": \"$PKI_EMAIL_FROM\"/" config/bad-key-revoker.json
 sed -i -e "s|\"SMTPTrustedRootFile\": \".*\"|\"SMTPTrustedRootFile\": \"$PKI_EMAIL_TRUST\"|" config/bad-key-revoker.json
-sed -i -e "s/\"server\": \".*\"/\"server\": \"$PKI_EMAIL_SERVER\"/" config/expiration-mailer.json
-sed -i -e "s/\"port\": \".*\"/\"port\": \"$PKI_EMAIL_PORT\"/" config/expiration-mailer.json
-sed -i -e "s/\"username\": \".*\"/\"username\": \"$PKI_EMAIL_USER\"/" config/expiration-mailer.json
-sed -i -e "s/\"from\": \".*\"/\"from\": \"$PKI_EMAIL_FROM\"/" config/expiration-mailer.json
-sed -i -e "s|\"SMTPTrustedRootFile\": \".*\"|\"SMTPTrustedRootFile\": \"$PKI_EMAIL_TRUST\"|" config/expiration-mailer.json
-sed -i -e "s/\"server\": \".*\"/\"server\": \"$PKI_EMAIL_SERVER\"/" config/notify-mailer.json
-sed -i -e "s/\"port\": \".*\"/\"port\": \"$PKI_EMAIL_PORT\"/" config/notify-mailer.json
-sed -i -e "s/\"username\": \".*\"/\"username\": \"$PKI_EMAIL_USER\"/" config/notify-mailer.json
-sed -i -e "s/\"from\": \".*\"/\"from\": \"$PKI_EMAIL_FROM\"/" config/notify-mailer.json
-sed -i -e "s|\"SMTPTrustedRootFile\": \".*\"|\"SMTPTrustedRootFile\": \"$PKI_EMAIL_TRUST\"|" config/notify-mailer.json
 
 sed -i -e "s/\"purgeInterval\": \".*\"/\"purgeInterval\": \"1s\"/" config/akamai-purger.json
 
diff --git a/install b/install
index 2d4c175..ced8a1d 100755
--- a/install
+++ b/install
@@ -30,7 +30,7 @@ dockerComposeVersion="v2.5.0"
 
 labcaUrl="https://github.com/hakwerk/labca/"
 boulderUrl="https://github.com/letsencrypt/boulder/"
-boulderTag="release-2025-05-27"
+boulderTag="v0.20250707.0"
 
 #
 # Color configuration
@@ -620,10 +620,6 @@ config_boulder() {
     cp core/interfaces.go "$boulderLabCADir/.backup/"
     cp policy/pa.go "$boulderLabCADir/.backup/"
     cp ra/ra.go "$boulderLabCADir/.backup/"
-    cp mail/mailer.go "$boulderLabCADir/.backup/"
-    cp cmd/expiration-mailer/main.go "$boulderLabCADir/.backup/"
-    cp cmd/notify-mailer/main.go "$boulderLabCADir/.backup/"
-    cp cmd/contact-auditor/main.go "$boulderLabCADir/.backup/"
     cp cmd/bad-key-revoker/main.go "$boulderLabCADir/.backup/"
     cp cmd/cert-checker/main.go "$boulderLabCADir/.backup/"
     cp cmd/log-validator/main.go "$boulderLabCADir/.backup/"
diff --git a/mail-tester.go b/mail-tester.go
deleted file mode 100644
index c1779a3..0000000
--- a/mail-tester.go
+++ /dev/null
@@ -1,169 +0,0 @@
-package notmain
-
-import (
-	"context"
-	"crypto/x509"
-	"flag"
-	"fmt"
-	netmail "net/mail"
-	"os"
-	"time"
-
-	"github.com/letsencrypt/boulder/bdns"
-	"github.com/letsencrypt/boulder/cmd"
-	bconfig "github.com/letsencrypt/boulder/config"
-	"github.com/letsencrypt/boulder/features"
-	bmail "github.com/letsencrypt/boulder/mail"
-)
-
-const usageString = `
-usage:
-mail-tester --config <path> <recipient>
-
-args:
-  config    File path to the configuration file for this service
-  recipient Email address to send an email to
-`
-
-type config struct {
-	Mailer struct {
-		DebugAddr string
-		DB        cmd.DBConfig
-		cmd.SMTPConfig
-
-		From    string
-		Subject string
-
-		CertLimit int
-		NagTimes  []string
-		// How much earlier (than configured nag intervals) to
-		// send reminders, to account for the expected delay
-		// before the next expiration-mailer invocation.
-		NagCheckInterval string
-		// Path to a text/template email template
-		EmailTemplate string
-
-		Frequency bconfig.Duration
-
-		TLS       cmd.TLSConfig
-		SAService *cmd.GRPCClientConfig
-
-		DNSTries                  int
-		DNSStaticResolvers        []string
-		DNSTimeout                string
-		DNSAllowLoopbackAddresses bool
-
-		// Path to a file containing a list of trusted root certificates for use
-		// during the SMTP connection (as opposed to the gRPC connections).
-		SMTPTrustedRootFile string
-
-		UserAgent string
-
-		Features features.Config
-	}
-
-	Syslog        cmd.SyslogConfig
-	OpenTelemetry cmd.OpenTelemetryConfig
-}
-
-func main() {
-	usage := func() {
-		fmt.Fprintf(os.Stderr, usageString)
-		os.Exit(1)
-	}
-
-	configFile := flag.String("config", "", "File path to the configuration file for this service")
-	flag.Parse()
-	if len(os.Args) <= 3 || *configFile == "" {
-		usage()
-	}
-
-	args := flag.Args()
-	recipient := args[0]
-
-	var c config
-	err := cmd.ReadConfigFile(*configFile, &c)
-	cmd.FailOnError(err, "Reading JSON config file into config structure")
-
-	features.Set(c.Mailer.Features)
-
-	scope, logger, oTelShutdown := cmd.StatsAndLogging(c.Syslog, c.OpenTelemetry, c.Mailer.DebugAddr)
-	defer oTelShutdown(context.Background())
-	logger.Info(cmd.VersionString())
-
-	tlsConfig, err := c.Mailer.TLS.Load(scope)
-	cmd.FailOnError(err, "TLS config")
-
-	clk := cmd.Clock()
-
-	dnsTimeout, err := time.ParseDuration(c.Mailer.DNSTimeout)
-	cmd.FailOnError(err, "Couldn't parse DNS timeout")
-	dnsTries := c.Mailer.DNSTries
-	if dnsTries < 1 {
-		dnsTries = 1
-	}
-	var resolver bdns.Client
-	servers, err := bdns.NewStaticProvider(c.Mailer.DNSStaticResolvers)
-	cmd.FailOnError(err, "Couldn't start static DNS server resolver")
-	if !c.Mailer.DNSAllowLoopbackAddresses {
-		r := bdns.New(
-			dnsTimeout,
-			servers,
-			scope,
-			clk,
-			dnsTries,
-			c.Mailer.UserAgent,
-			logger,
-			tlsConfig)
-		resolver = r
-	} else {
-		r := bdns.NewTest(dnsTimeout, servers, scope, clk, dnsTries, c.Mailer.UserAgent, logger, tlsConfig)
-		resolver = r
-	}
-
-	var smtpRoots *x509.CertPool
-	smtpSkipVerify := false
-	if c.Mailer.SMTPTrustedRootFile == "InsecureSkipVerify" {
-		smtpSkipVerify = true
-	} else if c.Mailer.SMTPTrustedRootFile != "" {
-		pem, err := os.ReadFile(c.Mailer.SMTPTrustedRootFile)
-		cmd.FailOnError(err, "Loading trusted roots file")
-		smtpRoots = x509.NewCertPool()
-		if !smtpRoots.AppendCertsFromPEM(pem) {
-			cmd.FailOnError(nil, "Failed to parse root certs PEM")
-		}
-	}
-
-	fromAddress, err := netmail.ParseAddress(c.Mailer.From)
-	cmd.FailOnError(err, fmt.Sprintf("Could not parse from address: %s", c.Mailer.From))
-
-	smtpPassword, err := c.Mailer.PasswordConfig.Pass()
-	cmd.FailOnError(err, "Failed to load SMTP password")
-	mailClient := bmail.New(
-		c.Mailer.Server,
-		c.Mailer.Port,
-		c.Mailer.Username,
-		smtpPassword,
-		smtpRoots,
-		smtpSkipVerify,
-		resolver,
-		*fromAddress,
-		logger,
-		scope,
-		1*time.Second,
-		5*60*time.Second)
-
-	conn, err := mailClient.Connect()
-	cmd.FailOnError(err, "mail-tester failed to connect")
-	defer conn.Close()
-
-	recipients := []string{}
-	recipients = append(recipients, recipient)
-
-	err = conn.SendMail(recipients, "Test Email from LabCA", "Test sending email from the LabCA server")
-	cmd.FailOnError(err, "mail-tester has failed")
-}
-
-func init() {
-	cmd.RegisterCommand("mail-tester", main, &cmd.ConfigValidator{Config: &config{}})
-}
diff --git a/patch-cfg.sh b/patch-cfg.sh
index b1799a0..548e721 100755
--- a/patch-cfg.sh
+++ b/patch-cfg.sh
@@ -14,8 +14,6 @@ boulderLabCADir="${2:-labca}"
 $SUDO patch -p1 -o "$boulderLabCADir/entrypoint.sh" < $cloneDir/patches/entrypoint.patch
 cp test/startservers.py "$boulderLabCADir/startservers.py"
 
-$SUDO patch -p1 -o "$boulderLabCADir/config/expiration-mailer.json" < $cloneDir/patches/config_expiration-mailer.patch
-$SUDO patch -p1 -o "$boulderLabCADir/config/notify-mailer.json" < $cloneDir/patches/config_notify-mailer.patch
 $SUDO patch -p1 -o "$boulderLabCADir/config/bad-key-revoker.json" < $cloneDir/patches/config_bad-key-revoker.patch
 $SUDO patch -p1 -o "$boulderLabCADir/config/ocsp-responder.json" < $cloneDir/patches/config_ocsp-responder.patch
 $SUDO patch -p1 -o "$boulderLabCADir/config/publisher.json" < $cloneDir/patches/config_publisher.patch
@@ -29,10 +27,10 @@ $SUDO patch -p1 -o "$boulderLabCADir/certs/generate.sh" < $cloneDir/patches/test
 chmod +x $boulderLabCADir/certs/generate.sh
 
 cp test/config/va*.json "$boulderLabCADir/config/"
-perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],/igs" $boulderLabCADir/config/va.json
-perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],/igs" $boulderLabCADir/config/remoteva-a.json
-perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],/igs" $boulderLabCADir/config/remoteva-b.json
-perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],/igs" $boulderLabCADir/config/remoteva-c.json
+perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],\n\t\t\"dnsAllowLoopbackAddresses\": true,/igs" $boulderLabCADir/config/va.json
+perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],\n\t\t\"dnsAllowLoopbackAddresses\": true,/igs" $boulderLabCADir/config/remoteva-a.json
+perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],\n\t\t\"dnsAllowLoopbackAddresses\": true,/igs" $boulderLabCADir/config/remoteva-b.json
+perl -i -p0e "s/\"dnsProvider\": \{.*?\t\t},/\"dnsStaticResolvers\": [\n\t\t\t\"127.0.0.1:8053\",\n\t\t\t\"127.0.0.1:8054\"\n\t\t],\n\t\t\"dnsAllowLoopbackAddresses\": true,/igs" $boulderLabCADir/config/remoteva-c.json
 perl -i -p0e "s/(\"accountURIPrefixes\": \[\n.*?\s+\])/\1,\n\t\t\"labcaDomains\": [\n\t\t]/igs" $boulderLabCADir/config/remoteva-a.json
 perl -i -p0e "s/(\"accountURIPrefixes\": \[\n.*?\s+\])/\1,\n\t\t\"labcaDomains\": [\n\t\t]/igs" $boulderLabCADir/config/remoteva-b.json
 perl -i -p0e "s/(\"accountURIPrefixes\": \[\n.*?\s+\])/\1,\n\t\t\"labcaDomains\": [\n\t\t]/igs" $boulderLabCADir/config/remoteva-c.json
diff --git a/patch.sh b/patch.sh
index 94ff6f7..5c8967a 100755
--- a/patch.sh
+++ b/patch.sh
@@ -15,6 +15,7 @@ if [ "$SUDO" == "" ]; then
 fi
 
 $SUDO patch -p1 < $cloneDir/patches/bad-key-revoker_main.patch
+$SUDO patch -p1 < $cloneDir/patches/bdns_dns.patch
 $SUDO patch -p1 < $cloneDir/patches/boulder-ra_main.patch
 $SUDO patch -p1 < $cloneDir/patches/boulder-va_main.patch
 $SUDO patch -p1 < $cloneDir/patches/ca_ca.patch
@@ -29,7 +30,6 @@ $SUDO patch -p1 < $cloneDir/patches/cert-checker_main.patch
 $SUDO patch -p1 < $cloneDir/patches/cmd_config.patch
 $SUDO patch -p1 < $cloneDir/patches/config_duration.patch
 $SUDO patch -p1 < $cloneDir/patches/config_rocsp_config.patch
-$SUDO patch -p1 < $cloneDir/patches/contact-auditor_main.patch
 $SUDO patch -p1 < $cloneDir/patches/core_interfaces.patch
 $SUDO patch -p1 < $cloneDir/patches/crl-storer_main.patch
 $SUDO patch -p1 < $cloneDir/patches/db_migrations.patch
@@ -37,22 +37,20 @@ $SUDO patch -p1 < $cloneDir/patches/db_migrations2.patch
 $SUDO patch -p1 < $cloneDir/patches/db_migrations3.patch
 $SUDO patch -p1 < $cloneDir/patches/db_migrations4.patch
 $SUDO patch -p1 < $cloneDir/patches/db_migrations5.patch
-$SUDO patch -p1 < $cloneDir/patches/expiration-mailer_main.patch
 $SUDO patch -p1 < $cloneDir/patches/issuance_crl.patch
 $SUDO patch -p1 < $cloneDir/patches/issuance_issuer.patch
 $SUDO patch -p1 < $cloneDir/patches/linter_linter.patch
 $SUDO patch -p1 < $cloneDir/patches/log_prod_prefix.patch
 $SUDO patch -p1 < $cloneDir/patches/log_test_prefix.patch
 $SUDO patch -p1 < $cloneDir/patches/log_validator_validator.patch
-$SUDO patch -p1 < $cloneDir/patches/mail_mailer.patch
 $SUDO patch -p1 < $cloneDir/patches/makefile.patch
-$SUDO patch -p1 < $cloneDir/patches/notify-mailer_main.patch
 $SUDO patch -p1 < $cloneDir/patches/ocsp-responder_main.patch
 $SUDO patch -p1 < $cloneDir/patches/policy_pa.patch
 $SUDO patch -p1 < $cloneDir/patches/ra_ra.patch
 $SUDO patch -p1 < $cloneDir/patches/ratelimits_names.patch
 $SUDO patch -p1 < $cloneDir/patches/redis_config.patch
 $SUDO patch -p1 < $cloneDir/patches/remoteva_main.patch
+$SUDO patch -p1 < $cloneDir/patches/reversed-hostname-checker_main.patch
 $SUDO patch -p1 < $cloneDir/patches/start.patch
 $SUDO patch -p1 < $cloneDir/patches/test_startservers.patch
 if [ "$SUDO" == "" ]; then
@@ -76,10 +74,6 @@ sed -i -e "s/proxysql:6033/mysql:3306/" sa/db/dbconfig.yml
 
 sed -i -e "s/\(.*overrides.*\)/-- \1/" sa/db-users/boulder_sa.sql
 
-mkdir -p "cmd/mail-tester"
-cp $cloneDir/mail-tester.go cmd/mail-tester/main.go
-perl -i -p0e "s/(\n\t\"github.com\/letsencrypt\/boulder\/cmd\")/\t_ \"github.com\/letsencrypt\/boulder\/cmd\/mail-tester\"\n\1/igs"  cmd/boulder/main.go
-
 perl -i -p0e "s/If you continue to encounter.*for troubleshooting and advice.//igs" sfe/pages/index.html
 perl -i -p0e "s/<b>Note:<\/b> If you encounter.*troubleshooting and advice.//igs" sfe/pages/unpause-form.html
 perl -i -p0e "s/If you continue to encounter.*for troubleshooting and advice.//igs" sfe/pages/unpause-invalid-request.html
diff --git a/patches/bad-key-revoker_main.patch b/patches/bad-key-revoker_main.patch
index 212e0ef..f70a199 100644
--- a/patches/bad-key-revoker_main.patch
+++ b/patches/bad-key-revoker_main.patch
@@ -1,16 +1,8 @@
 diff --git a/cmd/bad-key-revoker/main.go b/cmd/bad-key-revoker/main.go
-index c333b88c3..8e9cc21bd 100644
+index 8e6cfac85..8880ed301 100644
 --- a/cmd/bad-key-revoker/main.go
 +++ b/cmd/bad-key-revoker/main.go
-@@ -18,6 +18,7 @@ import (
- 	"google.golang.org/grpc"
- 	"google.golang.org/protobuf/types/known/emptypb"
- 
-+	"github.com/letsencrypt/boulder/bdns"
- 	"github.com/letsencrypt/boulder/cmd"
- 	"github.com/letsencrypt/boulder/config"
- 	"github.com/letsencrypt/boulder/core"
-@@ -398,6 +399,11 @@ type Config struct {
+@@ -270,6 +270,11 @@ type Config struct {
  		TLS       cmd.TLSConfig
  		RAService *cmd.GRPCClientConfig
  
@@ -22,59 +14,12 @@ index c333b88c3..8e9cc21bd 100644
  		// MaximumRevocations specifies the maximum number of certificates associated with
  		// a key hash that bad-key-revoker will attempt to revoke. If the number of certificates
  		// is higher than MaximumRevocations bad-key-revoker will error out and refuse to
-@@ -417,6 +423,8 @@ type Config struct {
+@@ -289,6 +294,8 @@ type Config struct {
  		// or no work to do.
  		BackoffIntervalMax config.Duration `validate:"-"`
  
 +		UserAgent string
 +
+ 		// Deprecated: the bad-key-revoker no longer sends emails; we use ARI.
+ 		// TODO(#8199): Remove this config stanza entirely.
  		Mailer struct {
- 			cmd.SMTPConfig
- 			// Path to a file containing a list of trusted root certificates for use
-@@ -469,8 +477,36 @@ func main() {
- 	cmd.FailOnError(err, "Failed to load credentials and create gRPC connection to RA")
- 	rac := rapb.NewRegistrationAuthorityClient(conn)
- 
-+	dnsTimeout, err := time.ParseDuration(config.BadKeyRevoker.DNSTimeout)
-+	cmd.FailOnError(err, "Couldn't parse DNS timeout")
-+	dnsTries := config.BadKeyRevoker.DNSTries
-+	if dnsTries < 1 {
-+		dnsTries = 1
-+	}
-+	var resolver bdns.Client
-+	servers, err := bdns.NewStaticProvider(config.BadKeyRevoker.DNSStaticResolvers)
-+	cmd.FailOnError(err, "Couldn't start static DNS server resolver")
-+	if !config.BadKeyRevoker.DNSAllowLoopbackAddresses {
-+		r := bdns.New(
-+			dnsTimeout,
-+			servers,
-+			scope,
-+			clk,
-+			dnsTries,
-+			config.BadKeyRevoker.UserAgent,
-+			logger,
-+			tlsConfig)
-+		resolver = r
-+	} else {
-+		r := bdns.NewTest(dnsTimeout, servers, scope, clk, dnsTries, config.BadKeyRevoker.UserAgent, logger, tlsConfig)
-+		resolver = r
-+	}
-+
- 	var smtpRoots *x509.CertPool
--	if config.BadKeyRevoker.Mailer.SMTPTrustedRootFile != "" {
-+	smtpSkipVerify := false
-+	if config.BadKeyRevoker.Mailer.SMTPTrustedRootFile == "InsecureSkipVerify" {
-+		smtpSkipVerify = true
-+	} else if config.BadKeyRevoker.Mailer.SMTPTrustedRootFile != "" {
- 		pem, err := os.ReadFile(config.BadKeyRevoker.Mailer.SMTPTrustedRootFile)
- 		cmd.FailOnError(err, "Loading trusted roots file")
- 		smtpRoots = x509.NewCertPool()
-@@ -490,6 +526,8 @@ func main() {
- 		config.BadKeyRevoker.Mailer.Username,
- 		smtpPassword,
- 		smtpRoots,
-+		smtpSkipVerify,
-+		resolver,
- 		*fromAddress,
- 		logger,
- 		scope,
diff --git a/patches/bdns_dns.patch b/patches/bdns_dns.patch
new file mode 100644
index 0000000..f0ff169
--- /dev/null
+++ b/patches/bdns_dns.patch
@@ -0,0 +1,81 @@
+diff --git a/bdns/dns.go b/bdns/dns.go
+index 5d297f3ef..9eabf1239 100644
+--- a/bdns/dns.go
++++ b/bdns/dns.go
+@@ -21,6 +21,7 @@ import (
+ 	"github.com/miekg/dns"
+ 	"github.com/prometheus/client_golang/prometheus"
+ 
++	"github.com/letsencrypt/boulder/features"
+ 	"github.com/letsencrypt/boulder/iana"
+ 	blog "github.com/letsencrypt/boulder/log"
+ 	"github.com/letsencrypt/boulder/metrics"
+@@ -77,22 +78,30 @@ func New(
+ ) Client {
+ 	var client exchanger
+ 
+-	// Clone the default transport because it comes with various settings
+-	// that we like, which are different from the zero value of an
+-	// `http.Transport`.
+-	transport := http.DefaultTransport.(*http.Transport).Clone()
+-	transport.TLSClientConfig = tlsConfig
+-	// The default transport already sets this field, but it isn't
+-	// documented that it will always be set. Set it again to be sure,
+-	// because Unbound will reject non-HTTP/2 DoH requests.
+-	transport.ForceAttemptHTTP2 = true
+-	client = &dohExchanger{
+-		clk: clk,
+-		hc: http.Client{
+-			Timeout:   readTimeout,
+-			Transport: transport,
+-		},
+-		userAgent: userAgent,
++	if features.Get().DOH {
++		// Clone the default transport because it comes with various settings
++		// that we like, which are different from the zero value of an
++		// `http.Transport`.
++		transport := http.DefaultTransport.(*http.Transport).Clone()
++		transport.TLSClientConfig = tlsConfig
++		// The default transport already sets this field, but it isn't
++		// documented that it will always be set. Set it again to be sure,
++		// because Unbound will reject non-HTTP/2 DoH requests.
++		transport.ForceAttemptHTTP2 = true
++		client = &dohExchanger{
++			clk: clk,
++			hc: http.Client{
++				Timeout:   readTimeout,
++				Transport: transport,
++			},
++			userAgent: userAgent,
++		}
++	} else {
++		client = &dns.Client{
++			// Set timeout for underlying net.Conn
++			ReadTimeout: readTimeout,
++			Net:         "udp",
++		}
+ 	}
+ 
+ 	queryTime := prometheus.NewHistogramVec(
+@@ -273,10 +282,17 @@ func (dnsClient *impl) exchangeOne(ctx context.Context, hostname string, qtype u
+ 		case r := <-ch:
+ 			if r.err != nil {
+ 				var isRetryable bool
+-				// According to the http package documentation, retryable
+-				// errors emitted by the http package are of type *url.Error.
+-				var urlErr *url.Error
+-				isRetryable = errors.As(r.err, &urlErr) && urlErr.Temporary()
++				if features.Get().DOH {
++					// According to the http package documentation, retryable
++					// errors emitted by the http package are of type *url.Error.
++					var urlErr *url.Error
++					isRetryable = errors.As(r.err, &urlErr) && urlErr.Temporary()
++				} else {
++					// According to the net package documentation, retryable
++					// errors emitted by the net package are of type *net.OpError.
++					var opErr *net.OpError
++					isRetryable = errors.As(r.err, &opErr) && opErr.Temporary()
++				}
+ 				hasRetriesLeft := tries < dnsClient.maxTries
+ 				if isRetryable && hasRetriesLeft {
+ 					tries++
diff --git a/patches/boulder-va_main.patch b/patches/boulder-va_main.patch
index 691d7dc..d3b16ca 100644
--- a/patches/boulder-va_main.patch
+++ b/patches/boulder-va_main.patch
@@ -1,8 +1,8 @@
 diff --git a/cmd/boulder-va/main.go b/cmd/boulder-va/main.go
-index 981c4f9b5..9d5db072d 100644
+index 5086a3923..f557f33b0 100644
 --- a/cmd/boulder-va/main.go
 +++ b/cmd/boulder-va/main.go
-@@ -52,6 +52,7 @@ type Config struct {
+@@ -53,6 +53,7 @@ type Config struct {
  		// Deprecated and ignored
  		MaxRemoteValidationFailures int `validate:"omitempty,min=0,required_with=RemoteVAs"`
  		Features                    features.Config
@@ -10,12 +10,30 @@ index 981c4f9b5..9d5db072d 100644
  	}
  
  	Syslog        cmd.SyslogConfig
-@@ -152,7 +153,8 @@ func main() {
+@@ -82,12 +83,16 @@ func main() {
+ 	clk := cmd.Clock()
+ 
+ 	var servers bdns.ServerProvider
++	proto := "udp"
++	if features.Get().DOH {
++		proto = "tcp"
++	}
+ 
+ 	if len(c.VA.DNSStaticResolvers) != 0 {
+ 		servers, err = bdns.NewStaticProvider(c.VA.DNSStaticResolvers)
+ 		cmd.FailOnError(err, "Couldn't start static DNS server resolver")
+ 	} else {
+-		servers, err = bdns.StartDynamicProvider(c.VA.DNSProvider, 60*time.Second, "tcp")
++		servers, err = bdns.StartDynamicProvider(c.VA.DNSProvider, 60*time.Second, proto)
+ 		cmd.FailOnError(err, "Couldn't start dynamic DNS server resolver")
+ 	}
+ 	defer servers.Stop()
+@@ -149,7 +154,8 @@ func main() {
  		c.VA.AccountURIPrefixes,
  		va.PrimaryPerspective,
  		"",
--		bdns.IsReservedIP)
-+		bdns.IsReservedIP,
+-		iana.IsReservedAddr)
++		iana.IsReservedAddr,
 +		c.VA.LabCADomains)
  	cmd.FailOnError(err, "Unable to create VA server")
  
diff --git a/patches/cmd_config.patch b/patches/cmd_config.patch
index bccf4a6..f6b0049 100644
--- a/patches/cmd_config.patch
+++ b/patches/cmd_config.patch
@@ -1,8 +1,8 @@
 diff --git a/cmd/config.go b/cmd/config.go
-index f8b6b847f..38ea91f33 100644
+index 13842fdf9..33cb282cb 100644
 --- a/cmd/config.go
 +++ b/cmd/config.go
-@@ -469,7 +469,7 @@ type GRPCServerConfig struct {
+@@ -471,7 +471,7 @@ type GRPCServerConfig struct {
  	// this controls how long it takes before a client learns about changes to its
  	// backends.
  	// https://pkg.go.dev/google.golang.org/grpc/keepalive#ServerParameters
diff --git a/patches/config_bad-key-revoker.patch b/patches/config_bad-key-revoker.patch
index 11b12ad..bff7676 100644
--- a/patches/config_bad-key-revoker.patch
+++ b/patches/config_bad-key-revoker.patch
@@ -1,5 +1,5 @@
 diff --git a/test/config/bad-key-revoker.json b/test/config/bad-key-revoker.json
-index f4696dc2..b9c19ce3 100644
+index d70aadc5f..99dfde454 100644
 --- a/test/config/bad-key-revoker.json
 +++ b/test/config/bad-key-revoker.json
 @@ -5,6 +5,13 @@
@@ -11,8 +11,8 @@ index f4696dc2..b9c19ce3 100644
 +			"127.0.0.1:8053",
 +			"127.0.0.1:8054"
 +		],
-+		"dnsTimeout": "3s",
 +		"dnsAllowLoopbackAddresses": true,
++		"dnsTimeout": "3s",
  		"tls": {
  			"caCertFile": "test/certs/ipki/minica.pem",
  			"certFile": "test/certs/ipki/bad-key-revoker.boulder/cert.pem",
diff --git a/patches/config_expiration-mailer.patch b/patches/config_expiration-mailer.patch
deleted file mode 100644
index 5df6e11..0000000
--- a/patches/config_expiration-mailer.patch
+++ /dev/null
@@ -1,18 +0,0 @@
-diff --git a/test/config/expiration-mailer.json b/test/config/expiration-mailer.json
-index 3b813060..6c709172 100644
---- a/test/config/expiration-mailer.json
-+++ b/test/config/expiration-mailer.json
-@@ -16,6 +16,13 @@
- 		],
- 		"emailTemplate": "test/config/expiration-mailer.gotmpl",
- 		"debugAddr": ":8008",
-+		"dnsTries": 3,
-+		"dnsStaticResolvers": [
-+			"127.0.0.1:8053",
-+			"127.0.0.1:8054"
-+		],
-+		"dnsTimeout": "3s",
-+		"dnsAllowLoopbackAddresses": true,
- 		"tls": {
- 			"caCertFile": "test/certs/ipki/minica.pem",
- 			"certFile": "test/certs/ipki/expiration-mailer.boulder/cert.pem",
diff --git a/patches/config_notify-mailer.patch b/patches/config_notify-mailer.patch
deleted file mode 100644
index 98238ce..0000000
--- a/patches/config_notify-mailer.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-diff --git a/test/config/notify-mailer.json b/test/config/notify-mailer.json
-index f6813a696..115d5b150 100644
---- a/test/config/notify-mailer.json
-+++ b/test/config/notify-mailer.json
-@@ -2,13 +2,22 @@
- 	"notifyMailer": {
- 		"server": "localhost",
- 		"port": "9380",
-+		"hostnamePolicyFile": "test/hostname-policy.yaml",
- 		"username": "cert-manager@example.com",
- 		"passwordFile": "test/secrets/smtp_password",
-+		"SMTPTrustedRootFile": "test/certs/ipki/minica.pem",
- 		"db": {
- 			"dbConnectFile": "test/secrets/mailer_dburl",
- 			"maxOpenConns": 10
- 		}
- 	},
-+	"pa": {
-+		"challenges": {
-+			"http-01": true,
-+			"dns-01": true,
-+			"tls-alpn-01": true
-+		}
-+	},
- 	"syslog": {
- 		"stdoutLevel": 7,
- 		"syslogLevel": 7
diff --git a/patches/config_ocsp-responder.patch b/patches/config_ocsp-responder.patch
index f362609..7e962fa 100644
--- a/patches/config_ocsp-responder.patch
+++ b/patches/config_ocsp-responder.patch
@@ -1,5 +1,5 @@
 diff --git a/test/config/ocsp-responder.json b/test/config/ocsp-responder.json
-index c67aa41f7..92fe8a28f 100644
+index 1e5d4cb70..e56719c21 100644
 --- a/test/config/ocsp-responder.json
 +++ b/test/config/ocsp-responder.json
 @@ -4,22 +4,6 @@
@@ -10,8 +10,8 @@ index c67aa41f7..92fe8a28f 100644
 -			"username": "ocsp-responder",
 -			"passwordFile": "test/secrets/ocsp_responder_redis_password",
 -			"shardAddrs": {
--				"shard1": "10.33.33.2:4218",
--				"shard2": "10.33.33.3:4218"
+-				"shard1": "10.77.77.2:4218",
+-				"shard2": "10.77.77.3:4218"
 -			},
 -			"timeout": "5s",
 -			"poolSize": 100,
diff --git a/patches/config_ra.patch b/patches/config_ra.patch
index 2e6b4ae..4dac21d 100644
--- a/patches/config_ra.patch
+++ b/patches/config_ra.patch
@@ -1,5 +1,5 @@
 diff --git a/test/config/ra.json b/test/config/ra.json
-index c16978e12..15e8252c0 100644
+index 613c5e1a1..c43053523 100644
 --- a/test/config/ra.json
 +++ b/test/config/ra.json
 @@ -3,7 +3,8 @@
@@ -45,7 +45,7 @@ index c16978e12..15e8252c0 100644
  		],
  		"validationProfiles": {
  			"legacy": {
-@@ -58,9 +54,9 @@
+@@ -67,9 +63,9 @@
  		},
  		"defaultProfileName": "legacy",
  		"tls": {
@@ -58,7 +58,7 @@ index c16978e12..15e8252c0 100644
  		},
  		"vaService": {
  			"dnsAuthority": "consul.service.consul",
-@@ -154,7 +150,7 @@
+@@ -163,7 +159,7 @@
  		},
  		"ctLogs": {
  			"stagger": "500ms",
diff --git a/patches/contact-auditor_main.patch b/patches/contact-auditor_main.patch
deleted file mode 100644
index 6b008d5..0000000
--- a/patches/contact-auditor_main.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-diff --git a/cmd/contact-auditor/main.go b/cmd/contact-auditor/main.go
-index fdec0c660..cc62d91c0 100644
---- a/cmd/contact-auditor/main.go
-+++ b/cmd/contact-auditor/main.go
-@@ -12,7 +12,9 @@ import (
- 	"time"
- 
- 	"github.com/letsencrypt/boulder/cmd"
-+	"github.com/letsencrypt/boulder/core"
- 	"github.com/letsencrypt/boulder/db"
-+	"github.com/letsencrypt/boulder/identifier"
- 	blog "github.com/letsencrypt/boulder/log"
- 	"github.com/letsencrypt/boulder/policy"
- 	"github.com/letsencrypt/boulder/sa"
-@@ -50,9 +52,16 @@ func validateContacts(id int64, createdAt string, contacts []string) error {
- 		fmt.Fprintf(&probsBuff, "%d\t%s\tvalidation\t%q\t%q\t%q\n", id, createdAt, contact, prob, contacts)
- 	}
- 
-+	var pa *policy.AuthorityImpl
-+	logger := cmd.NewLogger(cmd.SyslogConfig{StdoutLevel: 7})
-+	pa, _ = policy.New(
-+		map[identifier.IdentifierType]bool{identifier.TypeDNS: true, identifier.TypeIP: true},
-+		map[core.AcmeChallenge]bool{},
-+		logger)
-+
- 	for _, contact := range contacts {
- 		if strings.HasPrefix(contact, "mailto:") {
--			err := policy.ValidEmail(strings.TrimPrefix(contact, "mailto:"))
-+			err := pa.ValidEmail(strings.TrimPrefix(contact, "mailto:"))
- 			if err != nil {
- 				writeProb(contact, err.Error())
- 			}
diff --git a/patches/docker-compose.patch b/patches/docker-compose.patch
index 32b305f..70317d1 100644
--- a/patches/docker-compose.patch
+++ b/patches/docker-compose.patch
@@ -1,5 +1,5 @@
 diff --git a/docker-compose.yml b/docker-compose.yml
-index 9b05172ef..e981e30ec 100644
+index 8092b1522..b9a8ac069 100644
 --- a/docker-compose.yml
 +++ b/docker-compose.yml
 @@ -1,3 +1,4 @@
@@ -8,9 +8,9 @@ index 9b05172ef..e981e30ec 100644
    boulder:
      # The `letsencrypt/boulder-tools:latest` tag is automatically built in local
 @@ -14,13 +15,15 @@ services:
-       # to the IP address where your ACME client's solver is listening.
-       # FAKE_DNS: 172.17.0.1
-       FAKE_DNS: 10.77.77.77
+       # to the IP address where your ACME client's solver is listening. This is
+       # pointing at the boulder service's "public" IP, where challtestsrv is.
+       FAKE_DNS: 64.112.117.122
 -      BOULDER_CONFIG_DIR: test/config
 +      BOULDER_CONFIG_DIR: labca/config
        GOCACHE: /boulder/.gocache/go-build
@@ -26,7 +26,7 @@ index 9b05172ef..e981e30ec 100644
      networks:
        bouldernet:
          ipv4_address: 10.77.77.77
-@@ -53,121 +56,138 @@ services:
+@@ -53,122 +56,136 @@ services:
        - 4003:4003 # SFE
      depends_on:
        - bmysql
@@ -66,7 +66,7 @@ index 9b05172ef..e981e30ec 100644
 +    restart: always
  
    bmysql:
-     image: mariadb:10.5
+     image: mariadb:10.6.22
 +    volumes:
 +      - dbdata:/var/lib/mysql
      networks:
@@ -84,6 +84,12 @@ index 9b05172ef..e981e30ec 100644
 +    command: mysqld --bind-address=0.0.0.0 --log-output=TABLE
      logging:
 -      driver: none
++      driver: "json-file"
++      options:
++        max-size: "500k"
++        max-file: "5"
++    restart: always
+ 
 -  bproxysql:
 -    image: proxysql/proxysql:2.5.4
 -    # The --initial flag force resets the ProxySQL database on startup. By
@@ -99,77 +105,62 @@ index 9b05172ef..e981e30ec 100644
 -      bouldernet:
 -        aliases:
 -          - boulder-proxysql
-+      driver: "json-file"
-+      options:
-+        max-size: "500k"
-+        max-file: "5"
-+    restart: always
- 
+-
 -  bredis_1:
 +  bredis:
      image: redis:6.2.7
      volumes:
--      - ./test/:/test/:cached
+       - ./test/:/test/:cached
 -    command: redis-server /test/redis-ocsp.config
--    networks:
--      redisnet:
--        ipv4_address: 10.33.33.2
--
++      - /home/labca/boulder_labca:/opt/boulder/labca
++    command: redis-server /opt/boulder/labca/redis-ratelimits.config
+     networks:
+       bouldernet:
+-        # TODO(#8215): Remove this static IP allocation (and similar below) when
+-        # we tear down ocsp-responder. We only have it because ocsp-responder
+-        # requires IPs in its "ShardAddrs" config, while ratelimit redis
+-        # supports looking up shards via hostname and SRV record.
+-        ipv4_address: 10.77.77.2
++        ipv4_address: 10.77.77.4
++    restart: always
+ 
 -  bredis_2:
 -    image: redis:6.2.7
--    volumes:
++  bconsul:
++    image: hashicorp/consul:1.15.4
++    depends_on:
++      - control
+     volumes:
 -      - ./test/:/test/:cached
 -    command: redis-server /test/redis-ocsp.config
--    networks:
--      redisnet:
--        ipv4_address: 10.33.33.3
--
++      - /home/labca/boulder_labca:/opt/boulder/labca
+     networks:
+       bouldernet:
+-        ipv4_address: 10.77.77.3
++        ipv4_address: 10.77.77.10
++    command: "consul agent -dev -config-format=hcl -config-file=/opt/boulder/labca/consul/config.hcl"
++    restart: always
+ 
 -  bredis_3:
 -    image: redis:6.2.7
 -    volumes:
 -      - ./test/:/test/:cached
 -    command: redis-server /test/redis-ratelimits.config
-+      - /home/labca/boulder_labca:/opt/boulder/labca
-+    command: redis-server /opt/boulder/labca/redis-ratelimits.config
-     networks:
-       redisnet:
-         ipv4_address: 10.33.33.4
--
--  bredis_4:
--    image: redis:6.2.7
--    volumes:
--      - ./test/:/test/:cached
--    command: redis-server /test/redis-ratelimits.config
--    networks:
--      redisnet:
--        ipv4_address: 10.33.33.5
-+    restart: always
- 
-   bconsul:
-     image: hashicorp/consul:1.15.4
-+    depends_on:
-+      - control
-     volumes:
--     - ./test/:/test/:cached
-+      - /home/labca/boulder_labca:/opt/boulder/labca
-     networks:
-       consulnet:
-         ipv4_address: 10.55.55.10
-       bouldernet:
-         ipv4_address: 10.77.77.10
--    command: "consul agent -dev -config-format=hcl -config-file=/test/consul/config.hcl"
-+    command: "consul agent -dev -config-format=hcl -config-file=/opt/boulder/labca/consul/config.hcl"
-+    restart: always
- 
--  bjaeger:
--    image: jaegertracing/all-in-one:1.50
 +  gui:
 +    image: *boulder_tools_image
      networks:
 -      bouldernet:
--        ipv4_address: 10.77.77.17
+-        ipv4_address: 10.77.77.4
+-
+-  bredis_4:
+-    image: redis:6.2.7
 +      - bouldernet
-+    volumes:
+     volumes:
+-      - ./test/:/test/:cached
+-    command: redis-server /test/redis-ratelimits.config
+-    networks:
+-      bouldernet:
+-        ipv4_address: 10.77.77.5
 +      - /var/run/docker.sock:/var/run/docker.sock
 +      - /home/labca/admin:/go/src/labca
 +      - ./.gocache:/root/.cache/go-build
@@ -191,11 +182,18 @@ index 9b05172ef..e981e30ec 100644
 +        max-size: "500k"
 +        max-file: "5"
 +    restart: always
-+
+ 
+-  bconsul:
+-    image: hashicorp/consul:1.15.4
+-    volumes:
+-     - ./test/:/test/:cached
 +  nginx:
 +    image: nginx:latest
 +    restart: always
-+    networks:
+     networks:
+-      bouldernet:
+-        ipv4_address: 10.77.77.10
+-    command: "consul agent -dev -config-format=hcl -config-file=/test/consul/config.hcl"
 +      - bouldernet
 +    ports:
 +      - 80:80
@@ -206,11 +204,13 @@ index 9b05172ef..e981e30ec 100644
 +      - /home/labca/nginx_data/static:/var/www/html
 +    depends_on:
 +      - control
-+
+ 
+-  bjaeger:
+-    image: jaegertracing/all-in-one:1.50
 +  control:
 +    image: *boulder_tools_image
-+    networks:
-+      - bouldernet
+     networks:
+       - bouldernet
 +    volumes:
 +      - /var/run/docker.sock:/var/run/docker.sock
 +      - /home/labca/admin/data:/opt/labca/data
@@ -236,12 +236,11 @@ index 9b05172ef..e981e30ec 100644
    bpkimetal:
      image: ghcr.io/pkimetal/pkimetal:v1.20.0
      networks:
-       bouldernet:
-         ipv4_address: 10.77.77.9
+       - bouldernet
 +    restart: always
 +
 +volumes:
 +  dbdata:
  
  networks:
-   # This network is primarily used for boulder services. It is also used by
+   # This network represents the data-center internal network. It is used for
diff --git a/patches/expiration-mailer_main.patch b/patches/expiration-mailer_main.patch
deleted file mode 100644
index 383edab..0000000
--- a/patches/expiration-mailer_main.patch
+++ /dev/null
@@ -1,100 +0,0 @@
-diff --git a/cmd/expiration-mailer/main.go b/cmd/expiration-mailer/main.go
-index 8c80c8408..4102e879b 100644
---- a/cmd/expiration-mailer/main.go
-+++ b/cmd/expiration-mailer/main.go
-@@ -23,6 +23,7 @@ import (
- 
- 	"github.com/prometheus/client_golang/prometheus"
- 
-+	"github.com/letsencrypt/boulder/bdns"
- 	"github.com/letsencrypt/boulder/cmd"
- 	"github.com/letsencrypt/boulder/config"
- 	"github.com/letsencrypt/boulder/core"
-@@ -40,7 +41,7 @@ import (
- )
- 
- const (
--	defaultExpirationSubject = "Let's Encrypt certificate expiration notice for domain {{.ExpirationSubject}}"
-+	defaultExpirationSubject = "LabCA certificate expiration notice for domain {{.ExpirationSubject}}"
- )
- 
- var (
-@@ -162,8 +163,12 @@ func (m *mailer) sendNags(conn bmail.Conn, contacts []string, certs []*x509.Cert
- 		if parsed.Scheme != "mailto" {
- 			continue
- 		}
-+		pa, err := policy.New(nil, nil, nil)
-+		if err != nil {
-+			return fmt.Errorf("cannot create policy authority implementation")
-+		}
- 		address := parsed.Opaque
--		err = policy.ValidEmail(address)
-+		err = pa.ValidEmail(address)
- 		if err != nil {
- 			m.log.Debugf("skipping invalid email: %s", err)
- 			continue
-@@ -697,10 +702,17 @@ type Config struct {
- 		TLS       cmd.TLSConfig
- 		SAService *cmd.GRPCClientConfig
- 
-+		DNSTries                  int
-+		DNSStaticResolvers        []string
-+		DNSTimeout                string
-+		DNSAllowLoopbackAddresses bool
-+
- 		// Path to a file containing a list of trusted root certificates for use
- 		// during the SMTP connection (as opposed to the gRPC connections).
- 		SMTPTrustedRootFile string
- 
-+		UserAgent string
-+
- 		Features features.Config
- 	}
- 
-@@ -850,8 +862,36 @@ func main() {
- 	cmd.FailOnError(err, "Failed to load credentials and create gRPC connection to SA")
- 	sac := sapb.NewStorageAuthorityClient(conn)
- 
-+	dnsTimeout, err := time.ParseDuration(c.Mailer.DNSTimeout)
-+	cmd.FailOnError(err, "Couldn't parse DNS timeout")
-+	dnsTries := c.Mailer.DNSTries
-+	if dnsTries < 1 {
-+		dnsTries = 1
-+	}
-+	var resolver bdns.Client
-+	servers, err := bdns.NewStaticProvider(c.Mailer.DNSStaticResolvers)
-+	cmd.FailOnError(err, "Couldn't start static DNS server resolver")
-+	if !c.Mailer.DNSAllowLoopbackAddresses {
-+		r := bdns.New(
-+			dnsTimeout,
-+			servers,
-+			scope,
-+			clk,
-+			dnsTries,
-+			c.Mailer.UserAgent,
-+			logger,
-+			tlsConfig)
-+		resolver = r
-+	} else {
-+		r := bdns.NewTest(dnsTimeout, servers, scope, clk, dnsTries, c.Mailer.UserAgent, logger, tlsConfig)
-+		resolver = r
-+	}
-+
- 	var smtpRoots *x509.CertPool
--	if c.Mailer.SMTPTrustedRootFile != "" {
-+	smtpSkipVerify := false
-+	if c.Mailer.SMTPTrustedRootFile == "InsecureSkipVerify" {
-+		smtpSkipVerify = true
-+	} else if c.Mailer.SMTPTrustedRootFile != "" {
- 		pem, err := os.ReadFile(c.Mailer.SMTPTrustedRootFile)
- 		cmd.FailOnError(err, "Loading trusted roots file")
- 		smtpRoots = x509.NewCertPool()
-@@ -885,6 +925,8 @@ func main() {
- 		c.Mailer.Username,
- 		smtpPassword,
- 		smtpRoots,
-+		smtpSkipVerify,
-+		resolver,
- 		*fromAddress,
- 		logger,
- 		scope,
diff --git a/patches/mail_mailer.patch b/patches/mail_mailer.patch
deleted file mode 100644
index 0cab39f..0000000
--- a/patches/mail_mailer.patch
+++ /dev/null
@@ -1,110 +0,0 @@
-diff --git a/mail/mailer.go b/mail/mailer.go
-index 31ebd40b1..760b0b66e 100644
---- a/mail/mailer.go
-+++ b/mail/mailer.go
-@@ -2,6 +2,7 @@ package mail
- 
- import (
- 	"bytes"
-+	"context"
- 	"crypto/rand"
- 	"crypto/tls"
- 	"crypto/x509"
-@@ -23,7 +24,9 @@ import (
- 	"github.com/jmhodges/clock"
- 	"github.com/prometheus/client_golang/prometheus"
- 
-+	"github.com/letsencrypt/boulder/bdns"
- 	"github.com/letsencrypt/boulder/core"
-+	berrors "github.com/letsencrypt/boulder/errors"
- 	blog "github.com/letsencrypt/boulder/log"
- )
- 
-@@ -139,6 +142,8 @@ func New(
- 	username,
- 	password string,
- 	rootCAs *x509.CertPool,
-+	insecureSkipVerify bool,
-+	resolver bdns.Client,
- 	from mail.Address,
- 	logger blog.Logger,
- 	stats prometheus.Registerer,
-@@ -154,11 +159,13 @@ func New(
- 	return &mailerImpl{
- 		config: config{
- 			dialer: &dialerImpl{
--				username: username,
--				password: password,
--				server:   server,
--				port:     port,
--				rootCAs:  rootCAs,
-+				username:           username,
-+				password:           password,
-+				server:             server,
-+				port:               port,
-+				rootCAs:            rootCAs,
-+				insecureSkipVerify: insecureSkipVerify,
-+				dnsClient:          resolver,
- 			},
- 			log:              logger,
- 			from:             from,
-@@ -202,7 +209,7 @@ func (c config) generateMessage(to []string, subject, body string) ([]byte, erro
- 		fmt.Sprintf("To: %s", strings.Join(addrs, ", ")),
- 		fmt.Sprintf("From: %s", c.from.String()),
- 		fmt.Sprintf("Subject: %s", subject),
--		fmt.Sprintf("Date: %s", now.Format(time.RFC822)),
-+		fmt.Sprintf("Date: %s", now.Format(time.RFC1123Z)),
- 		fmt.Sprintf("Message-Id: <%s.%s.%s>", now.Format("20060102T150405"), mid.String(), c.from.Address),
- 		"MIME-Version: 1.0",
- 		"Content-Type: text/plain; charset=UTF-8",
-@@ -259,23 +266,41 @@ func (m *mailerImpl) Connect() (Conn, error) {
- type dialerImpl struct {
- 	username, password, server, port string
- 	rootCAs                          *x509.CertPool
-+	insecureSkipVerify               bool
-+	dnsClient                        bdns.Client
- }
- 
- func (di *dialerImpl) Dial() (smtpClient, error) {
--	hostport := net.JoinHostPort(di.server, di.port)
--	var conn net.Conn
--	var err error
--	conn, err = tls.Dial("tcp", hostport, &tls.Config{
--		RootCAs: di.rootCAs,
--	})
-+	deadline := time.Now().Add(30 * time.Second)
-+	ctx, cancel := context.WithDeadline(context.Background(), deadline)
-+	defer cancel()
-+
-+	addrs, _, err := di.dnsClient.LookupHost(ctx, di.server)
- 	if err != nil {
--		return nil, err
-+		problem := berrors.DNSError("%v")
-+		return nil, problem
-+	}
-+
-+	if len(addrs) == 0 {
-+		return nil, berrors.DNSError("No valid IP addresses found for %s", di.server)
- 	}
--	client, err := smtp.NewClient(conn, di.server)
-+
-+	tlsconf := &tls.Config{
-+		ServerName: di.server,
-+	}
-+	if di.insecureSkipVerify {
-+		tlsconf.InsecureSkipVerify = true
-+	} else {
-+		tlsconf.RootCAs = di.rootCAs
-+	}
-+
-+	hostport := net.JoinHostPort(addrs[0].String(), di.port)
-+	client, err := smtp.Dial(hostport)
- 	if err != nil {
- 		return nil, err
- 	}
--	auth := smtp.PlainAuth("", di.username, di.password, di.server)
-+	client.StartTLS(tlsconf)
-+	auth := smtp.PlainAuth("", di.username, di.password, addrs[0].String())
- 	if err = client.Auth(auth); err != nil {
- 		return nil, err
- 	}
diff --git a/patches/notify-mailer_main.patch b/patches/notify-mailer_main.patch
deleted file mode 100644
index 279f29a..0000000
--- a/patches/notify-mailer_main.patch
+++ /dev/null
@@ -1,93 +0,0 @@
-diff --git a/cmd/notify-mailer/main.go b/cmd/notify-mailer/main.go
-index 6c01efd64..6da77c7eb 100644
---- a/cmd/notify-mailer/main.go
-+++ b/cmd/notify-mailer/main.go
-@@ -2,6 +2,7 @@ package notmain
- 
- import (
- 	"context"
-+	"crypto/x509"
- 	"encoding/csv"
- 	"encoding/json"
- 	"errors"
-@@ -37,6 +38,7 @@ type mailer struct {
- 	recipients    []recipient
- 	targetRange   interval
- 	sleepInterval time.Duration
-+	pa            *policy.AuthorityImpl
- 	parallelSends uint
- }
- 
-@@ -201,7 +203,7 @@ func (m *mailer) run(ctx context.Context) error {
- 					continue
- 				}
- 
--				err := policy.ValidEmail(w.address)
-+				err := m.pa.ValidEmail(w.address)
- 				if err != nil {
- 					m.log.Infof("Skipping %q due to policy violation: %s", w.address, err)
- 					continue
-@@ -502,7 +504,12 @@ type Config struct {
- 	NotifyMailer struct {
- 		DB cmd.DBConfig
- 		cmd.SMTPConfig
-+		// Path to a file containing a list of trusted root certificates for use
-+		// during the SMTP connection (as opposed to the gRPC connections).
-+		SMTPTrustedRootFile string
-+		cmd.HostnamePolicyConfig
- 	}
-+	PA     cmd.PAConfig
- 	Syslog cmd.SyslogConfig
- }
- 
-@@ -570,6 +577,15 @@ func main() {
- 		log.Infof("While reading the recipient list file %s", probs)
- 	}
- 
-+	// Validate PA config and set defaults if needed
-+	cmd.FailOnError(cfg.PA.CheckChallenges(), "Invalid PA configuration")
-+
-+	logger := cmd.NewLogger(cmd.SyslogConfig{StdoutLevel: 7})
-+	pa, err := policy.New(cfg.PA.Identifiers, cfg.PA.Challenges, logger)
-+	cmd.FailOnError(err, "Failed to create PA")
-+	err = pa.LoadHostnamePolicyFile(cfg.NotifyMailer.HostnamePolicyFile)
-+	cmd.FailOnError(err, "Failed to load HostnamePolicyFile")
-+
- 	var mailClient bmail.Mailer
- 	if *dryRun {
- 		log.Infof("Starting %s in dry-run mode", cmd.VersionString())
-@@ -579,11 +595,26 @@ func main() {
- 		smtpPassword, err := cfg.NotifyMailer.PasswordConfig.Pass()
- 		cmd.FailOnError(err, "Couldn't load SMTP password from file")
- 
-+		var smtpRoots *x509.CertPool
-+		smtpSkipVerify := false
-+		if cfg.NotifyMailer.SMTPTrustedRootFile == "InsecureSkipVerify" {
-+			smtpSkipVerify = true
-+		} else if cfg.NotifyMailer.SMTPTrustedRootFile != "" {
-+			pem, err := os.ReadFile(cfg.NotifyMailer.SMTPTrustedRootFile)
-+			cmd.FailOnError(err, "Loading trusted roots file")
-+			smtpRoots = x509.NewCertPool()
-+			if !smtpRoots.AppendCertsFromPEM(pem) {
-+				cmd.FailOnError(nil, "Failed to parse root certs PEM")
-+			}
-+		}
-+
- 		mailClient = bmail.New(
- 			cfg.NotifyMailer.Server,
- 			cfg.NotifyMailer.Port,
- 			cfg.NotifyMailer.Username,
- 			smtpPassword,
-+			smtpRoots,
-+			smtpSkipVerify,
- 			nil,
- 			*address,
- 			log,
-@@ -605,6 +636,7 @@ func main() {
- 			end:   *end,
- 		},
- 		sleepInterval: *sleep,
-+		pa:            pa,
- 		parallelSends: *parallelSends,
- 	}
- 
diff --git a/patches/policy_pa.patch b/patches/policy_pa.patch
index b0b5408..f8642bd 100644
--- a/patches/policy_pa.patch
+++ b/patches/policy_pa.patch
@@ -1,8 +1,8 @@
 diff --git a/policy/pa.go b/policy/pa.go
-index 661a6b6bc..17dde317f 100644
+index f53100322..107c5986e 100644
 --- a/policy/pa.go
 +++ b/policy/pa.go
-@@ -32,6 +32,9 @@ type AuthorityImpl struct {
+@@ -31,6 +31,9 @@ type AuthorityImpl struct {
  	blocklist              map[string]bool
  	exactBlocklist         map[string]bool
  	wildcardExactBlocklist map[string]bool
@@ -12,7 +12,7 @@ index 661a6b6bc..17dde317f 100644
  	blocklistMu            sync.RWMutex
  
  	enabledChallenges  map[core.AcmeChallenge]bool
-@@ -75,6 +78,10 @@ type blockedNamesPolicy struct {
+@@ -66,6 +69,10 @@ type blockedNamesPolicy struct {
  	// time above and beyond the high-risk domains. Managing these entries separately
  	// from HighRiskBlockedNames makes it easier to vet changes accurately.
  	AdminBlockedNames []string `yaml:"AdminBlockedNames"`
@@ -23,7 +23,7 @@ index 661a6b6bc..17dde317f 100644
  }
  
  // LoadHostnamePolicyFile will load the given policy file, returning an error if
-@@ -134,10 +141,21 @@ func (pa *AuthorityImpl) processHostnamePolicy(policy blockedNamesPolicy) error
+@@ -125,10 +132,21 @@ func (pa *AuthorityImpl) processHostnamePolicy(policy blockedNamesPolicy) error
  		// wildcardNameMap to block issuance for `*.`+parts[1]
  		wildcardNameMap[parts[1]] = true
  	}
@@ -45,7 +45,7 @@ index 661a6b6bc..17dde317f 100644
  	pa.blocklistMu.Unlock()
  	return nil
  }
-@@ -209,7 +227,7 @@ var (
+@@ -199,7 +217,7 @@ var (
  //   - exactly equal to an IANA registered TLD
  //
  // It does NOT ensure that the domain is absent from any PA blocked lists.
@@ -54,7 +54,7 @@ index 661a6b6bc..17dde317f 100644
  	if domain == "" {
  		return errEmptyIdentifier
  	}
-@@ -241,7 +259,9 @@ func validNonWildcardDomain(domain string) error {
+@@ -232,7 +250,9 @@ func validNonWildcardDomain(domain string) error {
  		return errTooManyLabels
  	}
  	if len(labels) < 2 {
@@ -65,7 +65,7 @@ index 661a6b6bc..17dde317f 100644
  	}
  	for _, label := range labels {
  		// Check that this is a valid LDH Label: "A string consisting of ASCII
-@@ -285,6 +305,14 @@ func validNonWildcardDomain(domain string) error {
+@@ -276,6 +296,14 @@ func validNonWildcardDomain(domain string) error {
  		}
  	}
  
@@ -80,7 +80,7 @@ index 661a6b6bc..17dde317f 100644
  	// Names must end in an ICANN TLD, but they must not be equal to an ICANN TLD.
  	icannTLD, err := iana.ExtractSuffix(domain)
  	if err != nil {
-@@ -300,9 +328,9 @@ func validNonWildcardDomain(domain string) error {
+@@ -291,9 +319,9 @@ func validNonWildcardDomain(domain string) error {
  // ValidDomain checks that a domain is valid and that it doesn't contain any
  // invalid wildcard characters. It does NOT ensure that the domain is absent
  // from any PA blocked lists.
@@ -92,7 +92,7 @@ index 661a6b6bc..17dde317f 100644
  	}
  
  	// Names containing more than one wildcard are invalid.
-@@ -321,7 +349,7 @@ func ValidDomain(domain string) error {
+@@ -312,7 +340,7 @@ func ValidDomain(domain string) error {
  
  	// Names must end in an ICANN TLD, but they must not be equal to an ICANN TLD.
  	icannTLD, err := iana.ExtractSuffix(baseDomain)
@@ -101,7 +101,7 @@ index 661a6b6bc..17dde317f 100644
  		return errNonPublic
  	}
  	// Names must have a non-wildcard label immediately adjacent to the ICANN
-@@ -329,7 +357,7 @@ func ValidDomain(domain string) error {
+@@ -320,7 +348,7 @@ func ValidDomain(domain string) error {
  	if baseDomain == icannTLD {
  		return errICANNTLDWildcard
  	}
@@ -109,8 +109,8 @@ index 661a6b6bc..17dde317f 100644
 +	return pa.ValidNonWildcardDomain(baseDomain, false)
  }
  
- // validIP checks that an IP address:
-@@ -375,14 +403,14 @@ var forbiddenMailDomains = map[string]bool{
+ // ValidIP checks that an IP address:
+@@ -363,14 +391,14 @@ var forbiddenMailDomains = map[string]bool{
  // ValidEmail returns an error if the input doesn't parse as an email address,
  // the domain isn't a valid hostname in Preferred Name Syntax, or its on the
  // list of domains forbidden for mail (because they are often used in examples).
@@ -127,7 +127,7 @@ index 661a6b6bc..17dde317f 100644
  	if err != nil {
  		return berrors.InvalidEmailError("contact email has invalid domain: %s", err)
  	}
-@@ -424,7 +452,7 @@ func subError(ident identifier.ACMEIdentifier, err error) berrors.SubBoulderErro
+@@ -412,7 +440,7 @@ func subError(ident identifier.ACMEIdentifier, err error) berrors.SubBoulderErro
  //
  // Precondition: all input identifier values must be in lowercase.
  func (pa *AuthorityImpl) WillingToIssue(idents identifier.ACMEIdentifiers) error {
@@ -136,7 +136,7 @@ index 661a6b6bc..17dde317f 100644
  	if err != nil {
  		return err
  	}
-@@ -454,6 +482,10 @@ func (pa *AuthorityImpl) WillingToIssue(idents identifier.ACMEIdentifiers) error
+@@ -442,6 +470,10 @@ func (pa *AuthorityImpl) WillingToIssue(idents identifier.ACMEIdentifiers) error
  				}
  			}
  
@@ -147,7 +147,7 @@ index 661a6b6bc..17dde317f 100644
  			// For both wildcard and non-wildcard domains, check whether any parent domain
  			// name is on the regular blocklist.
  			err := pa.checkHostLists(ident.Value)
-@@ -494,12 +526,12 @@ func (pa *AuthorityImpl) WillingToIssue(idents identifier.ACMEIdentifiers) error
+@@ -483,12 +515,12 @@ func (pa *AuthorityImpl) WillingToIssue(idents identifier.ACMEIdentifiers) error
  //
  // If multiple identifiers are invalid, the error will contain suberrors
  // specific to each identifier.
@@ -162,7 +162,7 @@ index 661a6b6bc..17dde317f 100644
  			if err != nil {
  				subErrors = append(subErrors, subError(ident, err))
  			}
-@@ -541,6 +573,34 @@ func combineSubErrors(subErrors []berrors.SubBoulderError) error {
+@@ -530,6 +562,34 @@ func combineSubErrors(subErrors []berrors.SubBoulderError) error {
  	return nil
  }
  
@@ -197,7 +197,7 @@ index 661a6b6bc..17dde317f 100644
  // checkWildcardHostList checks the wildcardExactBlocklist for a given domain.
  // If the domain is not present on the list nil is returned, otherwise
  // errPolicyForbidden is returned.
-@@ -570,6 +630,9 @@ func (pa *AuthorityImpl) checkHostLists(domain string) error {
+@@ -559,6 +619,9 @@ func (pa *AuthorityImpl) checkHostLists(domain string) error {
  	labels := strings.Split(domain, ".")
  	for i := range labels {
  		joined := strings.Join(labels[i:], ".")
diff --git a/patches/ra_ra.patch b/patches/ra_ra.patch
index d340ae1..e4434b3 100644
--- a/patches/ra_ra.patch
+++ b/patches/ra_ra.patch
@@ -1,5 +1,5 @@
 diff --git a/ra/ra.go b/ra/ra.go
-index e8acf0781..3122449be 100644
+index ba993179a..04aec2370 100644
 --- a/ra/ra.go
 +++ b/ra/ra.go
 @@ -44,7 +44,6 @@ import (
@@ -10,7 +10,7 @@ index e8acf0781..3122449be 100644
  	"github.com/letsencrypt/boulder/probs"
  	pubpb "github.com/letsencrypt/boulder/publisher/proto"
  	rapb "github.com/letsencrypt/boulder/ra/proto"
-@@ -608,7 +607,7 @@ func (ra *RegistrationAuthorityImpl) validateContacts(contacts []string) error {
+@@ -574,7 +573,7 @@ func (ra *RegistrationAuthorityImpl) validateContacts(contacts []string) error {
  		if !core.IsASCII(contact) {
  			return berrors.InvalidEmailError("contact email contains non-ASCII characters")
  		}
@@ -19,7 +19,7 @@ index e8acf0781..3122449be 100644
  		if err != nil {
  			return err
  		}
-@@ -1981,6 +1980,9 @@ func crlShard(cert *x509.Certificate) (int64, error) {
+@@ -1895,6 +1894,9 @@ func crlShard(cert *x509.Certificate) (int64, error) {
  		return 0, fmt.Errorf("malformed CRLDistributionPoint %q", url)
  	}
  	shardStr := url[lastIndex+1:]
diff --git a/patches/ratelimits_names.patch b/patches/ratelimits_names.patch
index a9bc69b..8f5a5f9 100644
--- a/patches/ratelimits_names.patch
+++ b/patches/ratelimits_names.patch
@@ -1,8 +1,8 @@
 diff --git a/ratelimits/names.go b/ratelimits/names.go
-index bfda772b5..971892f22 100644
+index 1ce3c514c..6f72b517c 100644
 --- a/ratelimits/names.go
 +++ b/ratelimits/names.go
-@@ -102,6 +102,9 @@ var nameToString = map[Name]string{
+@@ -114,6 +114,9 @@ var nameToString = map[Name]string{
  	FailedAuthorizationsForPausingPerDomainPerAccount: "FailedAuthorizationsForPausingPerDomainPerAccount",
  }
  
@@ -12,53 +12,54 @@ index bfda772b5..971892f22 100644
  // isValid returns true if the Name is a valid rate limit name.
  func (n Name) isValid() bool {
  	return n > Unknown && n < Name(len(nameToString))
-@@ -163,7 +166,15 @@ func validateRegId(id string) error {
- // validateDomain validates that the provided string is formatted 'domain',
- // where domain is a domain name.
- func validateDomain(id string) error {
--	err := policy.ValidDomain(id)
+@@ -195,7 +198,14 @@ func validateRegIdIdentValue(id string) error {
+ 		return fmt.Errorf(
+ 			"invalid regId, %q must be formatted 'regId:identValue'", id)
+ 	}
+-	domainErr := policy.ValidDomain(regIdIdentValue[1])
++	pa := PA
++	if pa == nil {
++		pa, err = policy.New(map[identifier.IdentifierType]bool{"dns": true}, nil, nil)
++		if err != nil {
++			return fmt.Errorf("cannot create policy authority implementation")
++		}
++	}
++	domainErr := pa.ValidDomain(regIdIdentValue[1])
+ 	if domainErr != nil {
+ 		ipErr := policy.ValidIP(regIdIdentValue[1])
+ 		if ipErr != nil {
+@@ -209,7 +219,15 @@ func validateRegIdIdentValue(id string) error {
+ // name or an IP address. IPv6 addresses must be the lowest address in their
+ // /64, i.e. their last 64 bits must be zero.
+ func validateDomainOrCIDR(limit Name, id string) error {
+-	domainErr := policy.ValidDomain(id)
 +	pa := PA
 +	var err error
 +	if pa == nil {
-+		pa, err = policy.New(nil, nil, nil)
++		pa, err = policy.New(map[identifier.IdentifierType]bool{"dns": true}, nil, nil)
 +		if err != nil {
 +			return fmt.Errorf("cannot create policy authority implementation")
 +		}
 +	}
-+	err = pa.ValidDomain(id)
- 	if err != nil {
- 		return fmt.Errorf("invalid domain, %q must be formatted 'domain': %w", id, err)
- 	}
-@@ -184,7 +195,14 @@ func validateRegIdDomain(id string) error {
- 		return fmt.Errorf(
- 			"invalid regId, %q must be formatted 'regId:domain'", id)
- 	}
--	err = policy.ValidDomain(regIdDomain[1])
-+	pa := PA
-+	if pa == nil {
-+		pa, err = policy.New(nil, nil, nil)
-+		if err != nil {
-+			return fmt.Errorf("cannot create policy authority implementation")
-+		}
-+	}
-+	err = pa.ValidDomain(regIdDomain[1])
- 	if err != nil {
- 		return fmt.Errorf(
- 			"invalid domain, %q must be formatted 'regId:domain': %w", id, err)
-@@ -202,7 +220,15 @@ func validateFQDNSet(id string) error {
++	domainErr := pa.ValidDomain(id)
+ 	if domainErr == nil {
+ 		// This is a valid domain.
+ 		return nil
+@@ -264,8 +282,16 @@ func validateFQDNSet(id string) error {
  		return fmt.Errorf(
  			"invalid fqdnSet, %q must be formatted 'fqdnSet'", id)
  	}
--	return policy.WellFormedIdentifiers(identifier.NewDNSSlice(domains))
-+	pa := PA
 +	var err error
++	pa := PA
 +	if pa == nil {
-+		pa, err = policy.New(nil, nil, nil)
++		pa, err = policy.New(map[identifier.IdentifierType]bool{"dns": true}, nil, nil)
 +		if err != nil {
 +			return fmt.Errorf("cannot create policy authority implementation")
 +		}
 +	}
-+	return pa.WellFormedIdentifiers(identifier.NewDNSSlice(domains))
- }
- 
- func validateIdForName(name Name, id string) error {
+ 	for _, value := range values {
+-		domainErr := policy.ValidDomain(value)
++		domainErr := pa.ValidDomain(value)
+ 		if domainErr != nil {
+ 			ipErr := policy.ValidIP(value)
+ 			if ipErr != nil {
diff --git a/patches/remoteva_main.patch b/patches/remoteva_main.patch
index 47aa8ff..17fae1f 100644
--- a/patches/remoteva_main.patch
+++ b/patches/remoteva_main.patch
@@ -1,8 +1,8 @@
 diff --git a/cmd/remoteva/main.go b/cmd/remoteva/main.go
-index f99ded497..9a1033a87 100644
+index f4c0cbe76..1f454f489 100644
 --- a/cmd/remoteva/main.go
 +++ b/cmd/remoteva/main.go
-@@ -56,7 +56,8 @@ type Config struct {
+@@ -57,7 +57,8 @@ type Config struct {
  		// For more information, see: https://pkg.go.dev/crypto/tls#ClientAuthType
  		SkipGRPCClientCertVerification bool
  
@@ -12,12 +12,30 @@ index f99ded497..9a1033a87 100644
  	}
  
  	Syslog        cmd.SyslogConfig
-@@ -141,7 +142,8 @@ func main() {
+@@ -87,12 +88,16 @@ func main() {
+ 	clk := cmd.Clock()
+ 
+ 	var servers bdns.ServerProvider
++	proto := "udp"
++	if features.Get().DOH {
++		proto = "tcp"
++	}
+ 
+ 	if len(c.RVA.DNSStaticResolvers) != 0 {
+ 		servers, err = bdns.NewStaticProvider(c.RVA.DNSStaticResolvers)
+ 		cmd.FailOnError(err, "Couldn't start static DNS server resolver")
+ 	} else {
+-		servers, err = bdns.StartDynamicProvider(c.RVA.DNSProvider, 60*time.Second, "tcp")
++		servers, err = bdns.StartDynamicProvider(c.RVA.DNSProvider, 60*time.Second, proto)
+ 		cmd.FailOnError(err, "Couldn't start dynamic DNS server resolver")
+ 	}
+ 	defer servers.Stop()
+@@ -138,7 +143,8 @@ func main() {
  		c.RVA.AccountURIPrefixes,
  		c.RVA.Perspective,
  		c.RVA.RIR,
--		bdns.IsReservedIP)
-+		bdns.IsReservedIP,
+-		iana.IsReservedAddr)
++		iana.IsReservedAddr,
 +		c.RVA.LabCADomains)
  	cmd.FailOnError(err, "Unable to create Remote-VA server")
  
diff --git a/patches/reversed-hostname-checker_main.patch b/patches/reversed-hostname-checker_main.patch
new file mode 100644
index 0000000..9d1d046
--- /dev/null
+++ b/patches/reversed-hostname-checker_main.patch
@@ -0,0 +1,13 @@
+diff --git a/cmd/reversed-hostname-checker/main.go b/cmd/reversed-hostname-checker/main.go
+index 530dd7ca3..1235258ba 100644
+--- a/cmd/reversed-hostname-checker/main.go
++++ b/cmd/reversed-hostname-checker/main.go
+@@ -41,7 +41,7 @@ func main() {
+ 	scanner := bufio.NewScanner(input)
+ 	logger := cmd.NewLogger(cmd.SyslogConfig{StdoutLevel: 7})
+ 	logger.Info(cmd.VersionString())
+-	pa, err := policy.New(nil, nil, logger)
++	pa, err := policy.New(map[identifier.IdentifierType]bool{"dns": true}, nil, logger)
+ 	if err != nil {
+ 		log.Fatal(err)
+ 	}
diff --git a/patches/test_config_ca.patch b/patches/test_config_ca.patch
index 50f2879..9fea312 100644
--- a/patches/test_config_ca.patch
+++ b/patches/test_config_ca.patch
@@ -1,5 +1,5 @@
 diff --git a/test/config/ca.json b/test/config/ca.json
-index 35843b094..2d4e0c951 100644
+index e9a866ee6..e44b75aed 100644
 --- a/test/config/ca.json
 +++ b/test/config/ca.json
 @@ -1,11 +1,11 @@
@@ -139,7 +139,7 @@ index 35843b094..2d4e0c951 100644
  		"features": {}
  	},
  	"pa": {
-@@ -194,7 +137,7 @@
+@@ -197,7 +140,7 @@
  		}
  	},
  	"syslog": {
diff --git a/patches/va_http.patch b/patches/va_http.patch
index 7fdf5e2..2473192 100644
--- a/patches/va_http.patch
+++ b/patches/va_http.patch
@@ -1,8 +1,8 @@
 diff --git a/va/http.go b/va/http.go
-index 00942ede3..2b4ece730 100644
+index e7b0ec304..2b2aa2210 100644
 --- a/va/http.go
 +++ b/va/http.go
-@@ -341,7 +341,16 @@ func (va *ValidationAuthorityImpl) extractRequestTarget(req *http.Request) (iden
+@@ -350,7 +350,16 @@ func (va *ValidationAuthorityImpl) extractRequestTarget(req *http.Request) (iden
  	}
  
  	if _, err := iana.ExtractSuffix(reqHost); err != nil {
@@ -20,3 +20,18 @@ index 00942ede3..2b4ece730 100644
  	}
  
  	return identifier.NewDNS(reqHost), reqPort, nil
+@@ -398,10 +407,10 @@ func (va *ValidationAuthorityImpl) setupHTTPValidation(
+ 
+ 	// This is a backstop check to avoid connecting to reserved IP addresses.
+ 	// They should have been caught and excluded by `bdns.LookupHost`.
+-	err := va.isReservedIPFunc(targetIP)
+-	if err != nil {
+-		return nil, record, err
+-	}
++	// err := va.isReservedIPFunc(targetIP)
++	// if err != nil {
++	// 	return nil, record, err
++	// }
+ 
+ 	record.AddressUsed = targetIP
+ 
diff --git a/patches/va_va.patch b/patches/va_va.patch
index 816079d..fe43612 100644
--- a/patches/va_va.patch
+++ b/patches/va_va.patch
@@ -1,24 +1,24 @@
 diff --git a/va/va.go b/va/va.go
-index 5e7732d69..9a908c255 100644
+index 4307e57b4..c63b2dea8 100644
 --- a/va/va.go
 +++ b/va/va.go
-@@ -217,6 +217,7 @@ type ValidationAuthorityImpl struct {
+@@ -218,6 +218,7 @@ type ValidationAuthorityImpl struct {
  	perspective        string
  	rir                string
- 	isReservedIPFunc   func(ip net.IP) bool
+ 	isReservedIPFunc   func(netip.Addr) error
 +	labcaDomains       []string
  
  	metrics *vaMetrics
  }
-@@ -237,6 +238,7 @@ func NewValidationAuthorityImpl(
+@@ -238,6 +239,7 @@ func NewValidationAuthorityImpl(
  	perspective string,
  	rir string,
- 	reservedIPChecker func(ip net.IP) bool,
+ 	reservedIPChecker func(netip.Addr) error,
 +	labcaDomains []string,
  ) (*ValidationAuthorityImpl, error) {
  
  	if len(accountURIPrefixes) == 0 {
-@@ -274,6 +276,7 @@ func NewValidationAuthorityImpl(
+@@ -275,6 +277,7 @@ func NewValidationAuthorityImpl(
  		perspective:       perspective,
  		rir:               rir,
  		isReservedIPFunc:  reservedIPChecker,
diff --git a/patches/wfe2_main.patch b/patches/wfe2_main.patch
index b829821..2386460 100644
--- a/patches/wfe2_main.patch
+++ b/patches/wfe2_main.patch
@@ -1,5 +1,5 @@
 diff --git a/cmd/boulder-wfe2/main.go b/cmd/boulder-wfe2/main.go
-index 1f33c4746..1b0ad2ddb 100644
+index 955fe406c..33cc238d9 100644
 --- a/cmd/boulder-wfe2/main.go
 +++ b/cmd/boulder-wfe2/main.go
 @@ -12,14 +12,17 @@ import (
@@ -29,7 +29,7 @@ index 1f33c4746..1b0ad2ddb 100644
  		// DirectoryWebsite is used for the /directory response's "meta" element's
  		// "website" field.
  		DirectoryWebsite string `validate:"required,url"`
-@@ -175,6 +178,8 @@ type Config struct {
+@@ -180,6 +183,8 @@ type Config struct {
  			// to enable the pausing feature.
  			URL string `validate:"omitempty,required_with=HMACKey JWTLifetime,url,startswith=https://,endsnotwith=/"`
  		}
@@ -38,7 +38,7 @@ index 1f33c4746..1b0ad2ddb 100644
  	}
  
  	Syslog        cmd.SyslogConfig
-@@ -315,11 +320,25 @@ func main() {
+@@ -324,11 +329,25 @@ func main() {
  	var limiter *ratelimits.Limiter
  	var txnBuilder *ratelimits.TransactionBuilder
  	var limiterRedis *bredis.Ring
@@ -64,7 +64,7 @@ index 1f33c4746..1b0ad2ddb 100644
  		source := ratelimits.NewRedisSource(limiterRedis.Ring, clk, stats)
  		limiter, err = ratelimits.NewLimiter(clk, source, stats)
  		cmd.FailOnError(err, "Failed to create rate limiter")
-@@ -359,6 +378,7 @@ func main() {
+@@ -369,6 +388,7 @@ func main() {
  		unpauseSigner,
  		c.WFE.Unpause.JWTLifetime.Duration,
  		c.WFE.Unpause.URL,
diff --git a/patches/wfe2_wfe.patch b/patches/wfe2_wfe.patch
index be6f0e3..eb822d6 100644
--- a/patches/wfe2_wfe.patch
+++ b/patches/wfe2_wfe.patch
@@ -1,8 +1,8 @@
 diff --git a/wfe2/wfe.go b/wfe2/wfe.go
-index 462866a1d..287e6af55 100644
+index 891d165b6..1a4fda298 100644
 --- a/wfe2/wfe.go
 +++ b/wfe2/wfe.go
-@@ -163,6 +163,8 @@ type WebFrontEndImpl struct {
+@@ -166,6 +166,8 @@ type WebFrontEndImpl struct {
  	// descriptions (perhaps including URLs) of those profiles. NewOrder
  	// Requests with a profile name not present in this map will be rejected.
  	certProfiles map[string]string
@@ -11,7 +11,7 @@ index 462866a1d..287e6af55 100644
  }
  
  // NewWebFrontEndImpl constructs a web service for Boulder
-@@ -188,6 +190,7 @@ func NewWebFrontEndImpl(
+@@ -192,6 +194,7 @@ func NewWebFrontEndImpl(
  	unpauseSigner unpause.JWTSigner,
  	unpauseJWTLifetime time.Duration,
  	unpauseURL string,
@@ -19,7 +19,7 @@ index 462866a1d..287e6af55 100644
  ) (WebFrontEndImpl, error) {
  	if len(issuerCertificates) == 0 {
  		return WebFrontEndImpl{}, errors.New("must provide at least one issuer certificate")
-@@ -205,6 +208,10 @@ func NewWebFrontEndImpl(
+@@ -209,6 +212,10 @@ func NewWebFrontEndImpl(
  		return WebFrontEndImpl{}, errors.New("must provide a service for nonce redemption")
  	}
  
@@ -30,7 +30,7 @@ index 462866a1d..287e6af55 100644
  	wfe := WebFrontEndImpl{
  		log:                logger,
  		clk:                clk,
-@@ -227,6 +234,7 @@ func NewWebFrontEndImpl(
+@@ -232,6 +239,7 @@ func NewWebFrontEndImpl(
  		unpauseSigner:      unpauseSigner,
  		unpauseJWTLifetime: unpauseJWTLifetime,
  		unpauseURL:         unpauseURL,
@@ -38,34 +38,16 @@ index 462866a1d..287e6af55 100644
  	}
  
  	return wfe, nil
-@@ -635,7 +643,7 @@ func link(url, relation string) string {
- // contactsToEmails converts a *[]string of contacts (e.g. mailto:
- // person@example.com) to a []string of valid email addresses. Non-email
- // contacts or contacts with invalid email addresses are ignored.
--func contactsToEmails(contacts *[]string) []string {
-+func contactsToEmails(contacts *[]string, pa *policy.AuthorityImpl) []string {
- 	if contacts == nil {
- 		return nil
- 	}
-@@ -645,7 +653,7 @@ func contactsToEmails(contacts *[]string) []string {
- 			continue
+@@ -678,7 +686,7 @@ func (wfe *WebFrontEndImpl) contactsToEmails(contacts []string) ([]string, error
+ 			return nil, berrors.InvalidEmailError("contact email contains non-ASCII characters")
  		}
- 		address := strings.TrimPrefix(c, "mailto:")
--		err := policy.ValidEmail(address)
-+		err := pa.ValidEmail(address)
- 		if err != nil {
- 			continue
- 		}
-@@ -869,7 +877,7 @@ func (wfe *WebFrontEndImpl) NewAccount(
- 	}
- 	newRegistrationSuccessful = true
  
--	emails := contactsToEmails(accountCreateRequest.Contact)
-+	emails := contactsToEmails(accountCreateRequest.Contact, wfe.pa)
- 	if wfe.ee != nil && len(emails) > 0 {
- 		_, err := wfe.ee.SendContacts(ctx, &emailpb.SendContactsRequest{
- 			// Note: We are explicitly using the contacts provided by the
-@@ -2300,7 +2308,7 @@ func (wfe *WebFrontEndImpl) NewOrder(
+-		err = policy.ValidEmail(parsed.Opaque)
++		err = wfe.pa.ValidEmail(parsed.Opaque)
+ 		if err != nil {
+ 			return nil, err
+ 		}
+@@ -2299,7 +2307,7 @@ func (wfe *WebFrontEndImpl) NewOrder(
  	idents = identifier.Normalize(idents)
  	logEvent.Identifiers = idents