On Monday, December 20, 2021 12:10:31 PM EST Alessandro Vesely wrote: > On Mon 20/Dec/2021 12:53:12 +0100 Douglas Foster wrote: > > I am not doing any root domain lookups. If that is part of the proposed > > algorithm, somebody needs to document it. I am simply looking for a > > resource record matching the FROM domain name. > > Oops, yes, you're right. Dunno why I looked up their org domain, probably > lack of caffeine... > > Those 10 domains are non-existing under 3.2.6. Only 4 of them return > NXDOMAIN. > > One of them, mail.foodnetwork.com, has its own DMARC record with a policy > different from that of its parent domain, which can be a reason to use a > subdomain. (Curiously, it is one of those returning NXDOMAIN.) > > For the other 9, all what I can think of is some kind of misconfiguration. > I asked a few times why would one want to use a non-existing domain for the > From: address, but got no answers. Anyway, your numbers show that it's not > a very frequent setup.
... for legitimate mail. Scott K _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
