diff --git a/docker-compose.yml b/docker-compose.yml
index 47a8e27..6f5be18 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -41,6 +41,7 @@ services:
       - "$ROOT/overrides/dovecot:/overrides:ro"
     depends_on:
       - front
+    network_mode: service:front
 
   smtp:
     image: ghcr.io/mailu/postfix:$VERSION
@@ -55,6 +56,7 @@ services:
       - "$ROOT/overrides/postfix:/overrides:ro"
     depends_on:
       - front
+    network_mode: service:front
 
   antispam:
     image: ghcr.io/mailu/rspamd:$VERSION
@@ -98,6 +100,7 @@ services:
       - "$ROOT/dkim:/dkim"
     depends_on:
       - redis
+    network_mode: service:front
 
   webmail:
     image: ghcr.io/mailu/$WEBMAIL:$VERSION
@@ -108,6 +111,7 @@ services:
       - "$ROOT/overrides/$WEBMAIL:/overrides:ro"
     depends_on:
       - imap
+    network_mode: service:front
 
   fetchmail:
     image: ghcr.io/mailu/fetchmail:$VERSION