To Todd's point, I think the answer on which policy would be applied at least needs to be predictable. If one receiver chooses one policy and a different receiver chooses the other policy, that is going to make it significantly more complicated for complex organizations to implement a DMARC p=reject or even p=quarantine policy.
But it's not predictable now. Some receivers follow p=reject all the time, some follow it sometimes, some follow it never (me.)
I think that in practice the situations where someone else is going to resign your mail with a Sender DMARC policy are narrow enough that most IT departments wouldn't even notice.
Regards, John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail. https://jl.ly _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
