On 6/24/2020 7:04 AM, Jesse Thompson wrote:
On 6/23/20 1:49 PM, dcroc...@gmail.com wrote:
So... what if DMARC's semantic were really for the Sender: field?  If a message 
has no separate Sender: field, then of course the domain in the From: field is 
used.
Wouldn't MUAs need to consistently display Sender?

They don't consistently display From:

More importantly, MUAs are essentially -- or completely -- irrelevant to the use of DMARC now.  I don't see why that should change.

Again:  end-user recipient decision-making is irrelevant to meaningful email abuse handling.

d/


--
Dave Crocker
Brandenburg InternetWorking
bbiw.net

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