diff --git a/docker/dovecot/dovecot.conf b/docker/dovecot/dovecot.conf
index f40365c..355e1d0 100644
--- a/docker/dovecot/dovecot.conf
+++ b/docker/dovecot/dovecot.conf
@@ -54,11 +54,9 @@ service pop3-login {
   }
 }
 
-# Auth socket pour Postfix SASL
+# Auth TCP pour Postfix SASL (entre containers Docker)
 service auth {
-  unix_listener /var/spool/postfix/private/auth {
-    mode = 0660
-    user = postfix
-    group = postfix
+  inet_listener {
+    port = 12345
   }
 }