diff --git a/tests/compose/core/mailu.env b/tests/compose/core/mailu.env
index 30ecd830..5b99d33f 100644
--- a/tests/compose/core/mailu.env
+++ b/tests/compose/core/mailu.env
@@ -147,3 +147,5 @@ REJECT_UNLISTED_RECIPIENT=
 INITIAL_ADMIN_ACCOUNT=admin
 INITIAL_ADMIN_DOMAIN=mailu.io
 INITIAL_ADMIN_PW=FooBar
+
+PORTS=25,80,443,110,995,143,993,587,465,4190
\ No newline at end of file
diff --git a/tests/compose/fetchmail/mailu.env b/tests/compose/fetchmail/mailu.env
index af736912..570fccd4 100644
--- a/tests/compose/fetchmail/mailu.env
+++ b/tests/compose/fetchmail/mailu.env
@@ -142,3 +142,5 @@ REAL_IP_FROM=
 
 # choose wether mailu bounces (no) or rejects (yes) mail when recipient is unknown (value: yes, no)
 REJECT_UNLISTED_RECIPIENT=
+
+PORTS=25,80,443,110,995,143,993,587,465,4190
\ No newline at end of file
diff --git a/tests/compose/filters/mailu.env b/tests/compose/filters/mailu.env
index 0c48baf3..f8536e65 100644
--- a/tests/compose/filters/mailu.env
+++ b/tests/compose/filters/mailu.env
@@ -142,3 +142,5 @@ REAL_IP_FROM=
 
 # choose wether mailu bounces (no) or rejects (yes) mail when recipient is unknown (value: yes, no)
 REJECT_UNLISTED_RECIPIENT=
+
+PORTS=25,80,443,110,995,143,993,587,465,4190
\ No newline at end of file
diff --git a/tests/compose/webdav/mailu.env b/tests/compose/webdav/mailu.env
index 88f3c671..cbda1e67 100644
--- a/tests/compose/webdav/mailu.env
+++ b/tests/compose/webdav/mailu.env
@@ -142,3 +142,5 @@ REAL_IP_FROM=
 
 # choose wether mailu bounces (no) or rejects (yes) mail when recipient is unknown (value: yes, no)
 REJECT_UNLISTED_RECIPIENT=
+
+PORTS=25,80,443,110,995,143,993,587,465,4190
\ No newline at end of file
diff --git a/tests/compose/webmail/mailu.env b/tests/compose/webmail/mailu.env
index 53b86cba..fc78eeab 100644
--- a/tests/compose/webmail/mailu.env
+++ b/tests/compose/webmail/mailu.env
@@ -142,3 +142,5 @@ REAL_IP_FROM=
 
 # choose wether mailu bounces (no) or rejects (yes) mail when recipient is unknown (value: yes, no)
 REJECT_UNLISTED_RECIPIENT=
+
+PORTS=25,80,443,110,995,143,993,587,465,4190
\ No newline at end of file