diff --git a/test/docker_mail/templates/docker-compose.yml b/test/docker_mail/templates/docker-compose.yml
index 882e152d6cffda7ee5c788cceeed2c9ad2649621..2e49c8d167e7f0c20a7797af2fd6e3974853abda 100644
--- a/test/docker_mail/templates/docker-compose.yml
+++ b/test/docker_mail/templates/docker-compose.yml
@@ -122,9 +122,11 @@ services:
     volumes:
       - "{{ basedir }}/mailu/mailqueue:/queue"
       - "{{ basedir }}/mailu/overrides/postfix:/overrides:ro"
+      - "{{ basedir }}/mailman-core/var/data:/opt/mailman:ro"
     depends_on:
       - front
       - resolver
+      - mailman-core
     dns:
       - 192.168.203.254
 
diff --git a/test/docker_mail/templates/mailu/overrides/postfix.cf b/test/docker_mail/templates/mailu/overrides/postfix.cf
new file mode 100644
index 0000000000000000000000000000000000000000..d7467a21a59d28eb3e6d3e922c388017abc43376
--- /dev/null
+++ b/test/docker_mail/templates/mailu/overrides/postfix.cf
@@ -0,0 +1,13 @@
+
+# use relay_recipient_maps instead of local_recipient_maps
+relay_recipient_maps =
+  regexp:/opt/mailman/postfix_lmtp
+
+# Wert aus main.cf übernommen und ergänzt 
+transport_maps = 
+  lmdb:/etc/postfix/transport.map,
+  regexp:/opt/mailman/postfix_lmtp
+
+# Wert aus main.cf übernommen und ergänzt 
+relay_domains = 
+  regexp:/opt/mailman/postfix_domains