diff --git a/docker-compose/mail-relay/docker-compose.yml.j2 b/docker-compose/mail-relay/docker-compose.yml.j2
index 92175fe3..7e3c3535 100644
--- a/docker-compose/mail-relay/docker-compose.yml.j2
+++ b/docker-compose/mail-relay/docker-compose.yml.j2
@@ -17,6 +17,7 @@ services:
       INET_PROTOCOL: ipv4
       SMTP_GENERIC_MAP: |
         /nobody@lldap/ lldap@mgrote.net
+      # rewrite FROM "nobody@lldap" to "lldap@mgrote.net"
     networks:
       - mail-relay
     healthcheck:
diff --git a/group_vars/ldap.yml b/group_vars/ldap.yml
index 2c5818e5..eb8db91b 100644
--- a/group_vars/ldap.yml
+++ b/group_vars/ldap.yml
@@ -43,7 +43,7 @@ lldap_admin_password: "{{ lookup('keepass', 'lldap_ldap_user_pass', 'password')
 lldap_admin_mailaddress: lldap-admin@mgrote.net # only used on setup
 lldap_database_url: "postgres://{{ lldap_db_user }}:{{ lldap_db_pass }}@{{ lldap_db_host }}/{{ lldap_db_name }}"
 lldap_key_seed: "{{ lookup('keepass', 'lldap_key_seed', 'password') }}"
-lldap_smtp_from: "lldap@mgrote.net"
+#lldap_smtp_from: "lldap@mgrote.net" # unused in role
 lldap_smtp_reply_to: "Do not reply <info@mgrote.net>"
 lldap_smtp_server: "docker10.mgrote.net"
 lldap_smtp_port: "1025"