OpenARC

It's not something we are currently looking into. How is it better than DMARC?

It doesn't replace DMARC, but is another check along-side it. Some useful info is here: https://www.dmarcanalyzer.com/arc-is-here/

We are interested in this as well for our Virtualmin hosted customers :)

I am investigating exactly the same thing. The problem is with virtualmin forwarding email:

Say I have virtualmin server with domain myserver.com set up with a mail alias *@myserver.com to forward all mail to example@gmail.com. Quite a common set up.

A user from 3rd party domain, say client@yahoo.com sends mail to me@myserver.com, the mail is forwarded by my server to example@gmail.com.

The issue is the From address is still client@yahoo.com but coming from my IP. and of course my IP is not in yahoo.com DMARC/SPF rules. This then looks like I am spoofing email addresses, bounces and/or gets me blacklisted.

I believe ARC is designed to mitigate this issue.

Ah, that is useful. I'll add this to my TODO list for future releases.

Hi,

Looking forward to having ARC support as well! Thanks