diff --git a/DMS/docker-compose.yml b/DMS/docker-compose.yml
index 974ec88..122a35a 100644
--- a/DMS/docker-compose.yml
+++ b/DMS/docker-compose.yml
@@ -138,8 +138,8 @@ services:
       # Roundcube verbindet intern über den Docker-Alias
       - ROUNDCUBEMAIL_DEFAULT_HOST=ssl://node1.email-srvr.com
       - ROUNDCUBEMAIL_DEFAULT_PORT=993
-      - ROUNDCUBEMAIL_SMTP_SERVER=node1.email-srvr.com
-      - ROUNDCUBEMAIL_SMTP_PORT=25
+      - ROUNDCUBEMAIL_SMTP_SERVER=tls://node1.email-srvr.com
+      - ROUNDCUBEMAIL_SMTP_PORT=587
       - ROUNDCUBEMAIL_PLUGINS=password,email_config
     ports:
       - "8888:80"