diff --git a/swarm/roundcube.yaml b/swarm/roundcube.yaml
index 22f4f9a..248897a 100644
--- a/swarm/roundcube.yaml
+++ b/swarm/roundcube.yaml
@@ -46,4 +46,6 @@ services:
 
 networks:
   netgrimoire:
-    external: true   
\ No newline at end of file
+    external: true   
+  mail_mailcow-network:
+    external: true 
\ No newline at end of file