Has anyone using Mailman 3 successfully got DKIM *and* ARC working? I don't mind which MTA you are using or which add-ons you are using to provide the support for DKIM and ARC. I'm just trying to see if there is actually anyone that has both pieces working.

By working, I mean sending an email to a Mailman 3 list and receiving the email back from Mailman 3 and the receiving MTA confirms that both DKIM and ARC headers are valid.

If you have got it working, please can you share which MTA you are using and the software you are using for DKIM and ARC.

Thank you.

Regards

Philip