postfix.cf

# Overrides for mailman3 integration 
# see https://patrick.georgi.family/2019/01/12/combining-mailman-3-with-mailu/

always_add_missing_headers = yes
append_at_myorigin=no
append_dot_mydomain=no
local_header_rewrite_clients = permit_sasl_authenticated
owner_request_special = no
unknown_local_recipient_reject_code = 550

local_recipient_maps = regexp:/opt/mailman/postfix_lmtp
transport_maps = regexp:/opt/mailman/postfix_lmtp \lmdb:/etc/postfix/transport.map \${podop}transport
virtual_mailbox_maps = regexp:/opt/mailman/postfix_lmtp \${podop}mailbox