diff --git a/DMS/docker-compose.yml b/DMS/docker-compose.yml
index 3d10200..3c94774 100644
--- a/DMS/docker-compose.yml
+++ b/DMS/docker-compose.yml
@@ -138,8 +138,8 @@ services:
       - ROUNDCUBEMAIL_DEFAULT_HOST=ssl://node1.email-srvr.com
       - ROUNDCUBEMAIL_DEFAULT_PORT=993
       # Interner Traffic ohne TLS
-      - ROUNDCUBEMAIL_SMTP_SERVER=tls://node1.email-srvr.com
-      - ROUNDCUBEMAIL_SMTP_PORT=587
+      - ROUNDCUBEMAIL_SMTP_SERVER=ssl://node1.email-srvr.com
+      - ROUNDCUBEMAIL_SMTP_PORT=465
       
       # WICHTIG: Variablen LEER lassen, damit Roundcube keine Authentifizierung versucht!
       - ROUNDCUBEMAIL_SMTP_USER=