[mta]
incoming: mailman.mta.postfix.LMTP
outgoing: mailman.mta.deliver.deliver
# mailman-core hostname or IP from the Postfix server
lmtp_host: localhost
lmtp_port: 8024
# Postfix server's hostname or IP from mailman-core
smtp_host: smtp
smtp_port: 25
configuration: /etc/postfix-mailman.cfg