Hello all,

Over the past few months I've developed an patch for Mailman 3, <https://gitlab.com/mailman/mailman/merge_requests/252> giving it ARC <https://tools.ietf.org/html/draft-ietf-dmarc-arc-protocol-09> email authentication capabilities. The work is (99%)completed, and it just needs somebody to do a final review of the ARC functionality itself so I can implement any requested changes.

I had been working with Barry Warsaw, who had done a preliminary stylistic review, and subsequently, I've eliminated all raised issues. The branch is rebased as of last week, and passes all of qa, except one instance, which is something I'd like to discuss with somebody.(It fails a style test for line lengths in a test file which contains a bunch of cryptographic hashes) . Aside from that all qa pipelines pass.

Also, there is a decent amount of included documentation, but it could still use a bit more work. I'm planing on doing right before the branch is merged, and maybe with some additional guidance of the community.

So, in communicating with Barry, it seems he doesn't have the time to continue working on this with me. So, I'm reaching out to see if there is anybody with the interest and availability to review the PR. It's not particularly complex, and just introduces 2 new handlers into the pipeline.

Thanks & Regards, =Gene Shuman

PS. The PR uses a library dkimpy with code that I wrote which passes the ARC reference test suite(which I also wrote) 100%. So all of the cryptographic signing & validating in the PR validates against the current rfc of the protocol. So the crypto can be largely ignored. However you can easily test this functionality by sending ARC signed messages to say gmail, which does ARC validation, & looking at the headers.