On 6/24/2020 2:56 AM, David I wrote:
Specifically, alignment on 'From' allows automated checks against addresses of known, trusted contacts from addressbooks
So does alignment on Sender. Yes, the addresses in From: vs. Sender: might be different, but that doesn't mean the same assessment mechanisms that can be used on a From: address can't also be used on a Sender: address.
If the authentication is of a value which isn't related to the entry in the addressbook, I don't see how this kind of checking/filtering can be done, and so wouldn't be as useful. Unless there's a way I've missed?
I suspect that very little -- if any -- of the current use of DMARC relies on an end-user's address book.
d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
