On Thu, Dec 16, 2021 at 12:58 AM Douglas Foster < [email protected]> wrote:
> Yes, this is important stuff. > > This is one of my problem scenarios: > > A record arrives at the first hop and obtains DMARC PASS, based on SPF > and/or DKIM interpreted by a DMARC policy. Based on DMARC PASS, the > RFC5322.From address is confidently judged to be "Honestly identified" > DMARC checks SPF and DKIM, but not MX or A/AAAA. > > But then it is forwarded and loses its credentials during forwarding. > It sounds like you're rewriting the message header and sending it back out, like a mailing list would do. It's two different mail sessions. This problem space is what ARC attempts to solve.
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