diff --git a/compose.yml b/compose.yml
index e2827f5..4d99fd2 100644
--- a/compose.yml
+++ b/compose.yml
@@ -5,7 +5,6 @@ services:
   app:
     image: "boky/postfix"
     networks:
-      - mail
       - proxy
     healthcheck:
       test: [ "CMD", "sh", "-c", "netstat -an | fgrep 587 | fgrep -q LISTEN" ]
@@ -37,7 +36,5 @@ services:
         #- "traefik.tcp.routers.${STACK_NAME}.service=mailu_smtp"
 
 networks:
-  mail:
-    external: true
   proxy:
     external: true