Dovecot to stop using PAM auth

roles/ensure_dovecot/templates/Fedora/42/etc/dovecot/conf.d/10-auth.conf

@@ -119,7 +119,7 @@ auth_mechanisms = plain
 #!include auth-deny.conf.ext
 #!include auth-master.conf.ext
 
-!include auth-system.conf.ext
+#!include auth-system.conf.ext
 #!include auth-sql.conf.ext
 #!include auth-ldap.conf.ext
 #!include auth-passwdfile.conf.ext

roles/ensure_dovecot/templates/Fedora/43/etc/dovecot/conf.d/local.conf

@@ -13,6 +13,16 @@ mail_uid = mail
 mail_gid = mail
 mail_home = /var/spool/mail/%{user | domain}/%{user | username}
 
+# Override system auth from dovecot.conf so it quietly fails without triggering PAM logs
+passdb pam {
+  driver = passwd-file
+  passwd_file_path = /dev/null
+}
+userdb passwd {
+  driver = passwd-file
+  passwd_file_path = /dev/null
+}
+
 passdb passwd-file {
   driver = passwd-file
   passwd_file_path = /etc/dovecot/accounts

roles/ensure_dovecot/templates/Fedora/44/etc/dovecot/conf.d/local.conf

@@ -13,6 +13,16 @@ mail_uid = mail
 mail_gid = mail
 mail_home = /var/spool/mail/%{user | domain}/%{user | username}
 
+# Override system auth from dovecot.conf so it quietly fails without triggering PAM logs
+passdb pam {
+  driver = passwd-file
+  passwd_file_path = /dev/null
+}
+userdb passwd {
+  driver = passwd-file
+  passwd_file_path = /dev/null
+}
+
 passdb passwd-file {
   driver = passwd-file
   passwd_file_path = /etc/dovecot/accounts