Postfix mailman3 configuration

roles/mailman3/templates/mailman3/mailman.cfg.j2

@@ -271,4 +271,3 @@ lmtp_port: 8024
 # .cfg, which the file must end with.
 #configuration: python:mailman.config.exim4
 configuration: python:mailman.config.postfix
-

roles/postfix-mailman3/tasks/main.yml

@@ -16,15 +16,7 @@
     owner: root
     group: root
   loop: []
-#    - main.cf
-#    - master.cf
-#    - transport
-#    - mime_header_checks
-#    - recipient_access
-#    - sender_login_maps
-#    - postscreen_access.cidr
-#    - sasl/smtpd.conf
-#    - client_checks
+    - main.cf
   notify: Restart postfix
 
 - name: Indicate role in motd

roles/postfix-mailman3/templates/postfix/main.cf.j2

@@ -0,0 +1,60 @@
+{{ ansible_header | comment }}
+# See /usr/share/postfix/main.cf.dist for a commented, more complete version
+# This postfix configuration set up a MTA only to send and receive mailing list mails
+
+# When a mail is sent to @localhost, this domain will be used
+myorigin = crans.org
+
+smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
+biff = no
+
+# Uncomment the next line to generate "delayed mail" warnings
+#delay_warning_time = 4h
+
+# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
+# fresh installs.
+compatibility_level = 2
+
+# Use self-signed Debian generated cert for local TLS
+# TLS parameters
+smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
+smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
+smtpd_use_tls=yes
+smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
+smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
+
+# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
+# information on enabling SSL in the smtp client.
+
+# Default aliases
+alias_maps = hash:/etc/aliases
+alias_database = hash:/etc/aliases
+
+# Send to main mail server
+relayhost = smtp.adm.crans.org
+
+# Only localhost
+mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
+
+# Listen on IPv4 and IPv6
+inet_interfaces = all
+inet_protocols = all
+
+# Do not use gethostname
+myhostname = {{ ansible_hostname }}.crans.org
+mydomain = crans.org
+
+# Softbounce, ask remote mail server to send the mail again if error
+# Do not keep it active in production!
+soft_bounce = no
+
+# Mailman3 integration
+recipient_delimiter = +
+unknown_local_recipient_reject_code = 550
+owner_request_special = no
+transport_maps =
+    hash:/var/lib/mailman3/data/postfix_lmtp
+local_recipient_maps =
+    hash:/var/lib/mailman3/data/postfix_lmtp
+relay_domains =
+    hash:/var/lib/mailman3/data/postfix_domains