We are running the Sympa mailing list manager - yay!

There are some issues to be fixed or reconfigured though.

Default configuration changes

Some default list configuration items should be changed:

• Visibility of the lists (visibility): should be set to 'noconceal'
• Reply address (reply_to_header): should be set to 'sender'
  
  

DKIM and DMARC breakage

Not sure what causes this, but sending a message from a  yahoo.com account to the list causes it to fail DKIM/DMARC for (at least) Google receipients