use MTA=none also for noise

roles/noise/templates/mm_cfg.py.j2

@@ -126,12 +126,12 @@ SMTP_PASSWD = '{{ noise_smtp.auth_password }}'
 # Uncomment this if you configured your MTA such that it
 # automatically recognizes newly created lists.
 # (see /usr/share/doc/mailman/README.{EXIM,...})
-# MTA=None   # Misnomer, suppresses alias output on newlist
+MTA=None   # Misnomer, suppresses alias output on newlist
 
 # -------------------------------------------------------------
 # Uncomment if you use Postfix virtual domains, but be sure to
 # read /usr/share/doc/mailman/README.POSTFIX first.
-MTA='Postfix'
+# MTA='Postfix'
 
 POSTFIX_STYLE_VIRTUAL_DOMAINS = virtualhosts