diff --git a/core/admin/mailu/internal/nginx.py b/core/admin/mailu/internal/nginx.py
index 9cf9cfb0..6c320ae4 100644
--- a/core/admin/mailu/internal/nginx.py
+++ b/core/admin/mailu/internal/nginx.py
@@ -18,6 +18,7 @@ STATUSES = {
         "sieve": "AuthFailed"
     }),
     "encryption": ("Must issue a STARTTLS command first", {
+        "imap": "PRIVACYREQUIRED",
         "smtp": "530 5.7.0"
         "submission": "530 5.7.0",
         "pop3": "-ERR Authentication canceled.",