Presumably, a sender who uses DMARC might publish SPF to cover recipients who don't use DMARC, but would prefer that recipients use DMARC (authenticated by DKIM only).
Barry On Fri, Jun 23, 2023 at 1:54 PM John R Levine <[email protected]> wrote: > > > My understanding is that if `auth=dkim` then SPF would be ignored from the > > perspective of DMARC. So if a receiver sees DKIM is not DMARC aligned and > > only SPF is DMARC aligned then it would still be treated as a DMARC fail. > > That's my understanding. > > > It would be a way for senders to say "yes I checked that all my DKIM > > signatures are working and aligned, I don't need you to look at SPF and > > don't want to have the risk of SPF Upgrades. > > So why do you publish an SPF record? Presumably so someone will accept > your mail who wouldn't otherwise, except you just said they shouldn't. > Still not making sense to me. > > Regards, > John Levine, [email protected], Taughannock Networks, Trumansburg NY > Please consider the environment before reading this e-mail. https://jl.ly > > _______________________________________________ > dmarc mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dmarc _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
