diff --git a/playbooks/templates/chaosknoten/configs/pad/compose.yaml.j2 b/playbooks/templates/chaosknoten/configs/pad/compose.yaml.j2
index 692e028..c54b715 100644
--- a/playbooks/templates/chaosknoten/configs/pad/compose.yaml.j2
+++ b/playbooks/templates/chaosknoten/configs/pad/compose.yaml.j2
@@ -1,6 +1,5 @@
 ---
 # see https://github.com/hedgedoc/container/blob/master/docker-compose.yml
-version: "3.6"
 
 services:
   database:
@@ -11,8 +10,6 @@ services:
       - "POSTGRES_DB=hedgedoc"
     volumes:
       - database:/var/lib/postgresql/data
-    networks:
-      backend:
     restart: always
 
   app:
@@ -45,9 +42,6 @@ services:
       - uploads:/hedgedoc/public/uploads
     ports:
       - "127.0.0.1:3000:3000"
-    networks:
-      backend:
-      frontend:
     restart: always
     depends_on:
       - database
@@ -61,20 +55,13 @@ services:
       - "POSTGRES_USERNAME=hedgedoc"
       - "POSTGRES_PASSWORD={{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/pad/DB_PASSWORD", create=false, missing="error") }}"
       - "SMTP_FROM=pad@hamburg.ccc.de"
-      - "SMTP_HOSTNAME=cow-intern.hamburg.ccc.de"
+      - "SMTP_HOSTNAME=cow.hamburg.ccc.de"
       - "SMTP_USERNAME=pad@hamburg.ccc.de"
       - "SMTP_PASSWORD={{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/pad/smtp_password", create=false, missing="error") }}"
       - "URL=https://pad.hamburg.ccc.de"
-    networks:
-      backend:
     depends_on:
       - database
 
 volumes:
   database: {}
   uploads: {}
-
-networks:
-  backend:
-    internal: true
-  frontend: