On 3/24/2021 4:54 AM, Ken O'Driscoll wrote:
There is actually an existing working group draft discussing extending DMARC to incorporate the 5322.Sender header, see https://datatracker.ietf.org/doc/draft-ietf-dmarc-sender/ <https://datatracker.ietf.org/doc/draft-ietf-dmarc-sender/>. That document goes into considerable detail on how 5322.Sender could be incorporated in the future.
To be possibly overly frank, I think the draft is stalled. Given existing practice, there are challenges to fielding this, for incremental adoption, in a way that is reasonable and useful. (The Internet does not support 'flag' days.)
I am still, sometimes, mulling over the choices for this, but so far haven't come up with (or seen) ways to resolve the challenge.
An option the working group declined to pursue is to define an Author: field and leave the From: field to the 'handling' role DMARC has relegated it to. The draft for this is being pursued outside of the working group.
d/ -- Dave Crocker dcroc...@gmail.com 408.329.0791 Volunteer, Silicon Valley Chapter Information & PLanning Coordinator American Red Cross dave.crock...@redcross.org
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