diff --git a/docker-compose/mail-relay/docker-compose.yml.j2 b/docker-compose/mail-relay/docker-compose.yml.j2
index 92d6f65d..abc82acf 100644
--- a/docker-compose/mail-relay/docker-compose.yml.j2
+++ b/docker-compose/mail-relay/docker-compose.yml.j2
@@ -2,7 +2,7 @@ version: '3.3'
 services:
   postfix:
     image: "registry.mgrote.net/postfix:latest"
-    container_name: mail-relay
+    container_name: postfix
     restart: always
     ports:
         - 1025:25
@@ -23,9 +23,9 @@ services:
       # rewrite FROM "nobody@lldap" to "lldap@mgrote.net"
       # /.*/ würde alle absender adressen ersetzen
     networks:
-      - mail-relay
+      - postfix
 
 ######## Networks ########
 networks:
-  mail-relay:
+  postfix:
     external: true
diff --git a/docker-compose/munin/docker-compose.yml.j2 b/docker-compose/munin/docker-compose.yml.j2
index 83aec959..38f1bcab 100644
--- a/docker-compose/munin/docker-compose.yml.j2
+++ b/docker-compose/munin/docker-compose.yml.j2
@@ -6,7 +6,7 @@ services:
     restart: always
     environment:
       MAILCONTACT: michael.grote@posteo.de
-      MAILSERVER: mail-relay
+      MAILSERVER: postfix
       MAILPORT: 25
       MAILFROM: munin@mgrote.net
       MAILUSER: munin@mgrote.net
@@ -39,5 +39,5 @@ volumes:
   cache:
 
 networks:
-  mail-relay:
+  postfix:
     external: true
diff --git a/docker-compose/nextcloud/docker-compose.yml.j2 b/docker-compose/nextcloud/docker-compose.yml.j2
index 8b24ec93..8d5b1d00 100644
--- a/docker-compose/nextcloud/docker-compose.yml.j2
+++ b/docker-compose/nextcloud/docker-compose.yml.j2
@@ -107,7 +107,7 @@ services:
     networks:
       - intern
       - traefik
-      - mail-relay
+      - postfix
     healthcheck:
       test: ["CMD", "curl", "-f", "--insecure", "http://localhost:80"]
       interval: 30s
@@ -137,7 +137,7 @@ networks:
     driver: bridge
   traefik:
     external: true
-  mail-relay:
+  postfix:
     external: true
 ######## Volumes ########
 volumes:
diff --git a/docker-compose/unifi-network-application/docker-compose.yml.j2 b/docker-compose/unifi-network-application/docker-compose.yml.j2
index ad1942d7..40e298b9 100644
--- a/docker-compose/unifi-network-application/docker-compose.yml.j2
+++ b/docker-compose/unifi-network-application/docker-compose.yml.j2
@@ -29,7 +29,7 @@ services:
       - 5514:5514/udp #optional
     restart: always
     networks:
-      - mail-relay
+      - postfix
       - unifi-internal
     healthcheck:
       test: ["CMD", "curl", "-f", "--insecure", "https://localhost:8443"]
@@ -66,7 +66,7 @@ volumes:
   unifi-data:
 ######## Networks ########
 networks:
-  mail-relay:
+  postfix:
     external: true
   unifi-internal:
     driver: bridge
diff --git a/friedhof/lldap/docker-compose.yml.j2 b/friedhof/lldap/docker-compose.yml.j2
index 9911f1df..4ede0131 100644
--- a/friedhof/lldap/docker-compose.yml.j2
+++ b/friedhof/lldap/docker-compose.yml.j2
@@ -13,7 +13,7 @@ services:
     networks:
       - intern
       - traefik
-      - mail-relay
+      - postfix
     volumes:
       - /etc/localtime:/etc/localtime:ro
       - /etc/timezone:/etc/timezone:ro
@@ -33,7 +33,7 @@ services:
       LLDAP_SMTP_OPTIONS__ENABLE_PASSWORD_reset: true
       LLDAP_SMTP_OPTIONS__FROM: "LLDAP Admin <info@mgrote.net>"
       LLDAP_SMTP_OPTIONS__REPLY_TO: "Do not reply <info@mgrote.net>"
-      LLDAP_SMTP_OPTIONS__SERVER: mail-relay
+      LLDAP_SMTP_OPTIONS__SERVER: postfix
       LLDAP_SMTP_OPTIONS__PORT: 25
       LLDAP_SMTP_OPTIONS__SMTP_ENCRYPTION: NONE
       LLDAP_SMTP_OPTIONS__USER: info@mgrote.net
@@ -69,5 +69,5 @@ networks:
   intern:
   traefik:
     external: true
-  mail-relay:
+  postfix:
     external: true
diff --git a/host_vars/docker10.mgrote.net.yml b/host_vars/docker10.mgrote.net.yml
index 06b97aac..a614829e 100644
--- a/host_vars/docker10.mgrote.net.yml
+++ b/host_vars/docker10.mgrote.net.yml
@@ -56,9 +56,9 @@ compose_files:
     network: traefik
   - name: routeros-config-export
     state: present
-  - name: mail-relay
+  - name: postfix
     state: present
-    network: mail-relay
+    network: postfix
   - name: woodpecker
     state: present
     network: traefik