mailman integration

test/docker_mail/templates/mailu/overrides/postfix/postfix.cf

 
-# use relay_recipient_maps instead of local_recipient_maps
-relay_recipient_maps =
-  regexp:/opt/mailman/postfix_lmtp
+# Overrides for mailman3 integration 
+# see https://patrick.georgi.family/2019/01/12/combining-mailman-3-with-mailu/
 
-# 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 
+append_at_myorigin=no
+append_dot_mydomain=no
+recipient_delimiter = +
+unknown_local_recipient_reject_code = 550
+owner_request_special = no
+virtual_mailbox_maps = regexp:/opt/mailman/postfix_lmtp \$virtual_alias_maps
+virtual_mailbox_domains = \${sql}sqlite-virtual_mailbox_domains.cf
+transport_maps = regexp:/opt/mailman/postfix_lmtp \${sql}sqlite-transport.cf
+local_recipient_maps = regexp:/opt/mailman/postfix_lmtp
+always_add_missing_headers = yes
+local_header_rewrite_clients = permit_sasl_authenticated