On 1/30/25 1:39 PM, Jeremy Harris wrote:
On 30/01/2025 21:19, Michael Thomas wrote:
I’m a little unclear on the need to fully describe the “mutation” that might be applied by an intermediary. Even if fully described, you need to have some trust of the intermediary to accept the mutation, because otherwise you don’t know that the mutation doesn’t contain harmful/unwanted content (barring some magic AI thing perhaps).
Yeah, that's what I'm trying to understand. If you can recover the
original signature, you could conceivably run spam filters separately
on the different parts using the reputation (if any) of the different
parts, I suppose. But how big of a deal is that in the real world?
One useful thing from being able to recover the message as it arrived
at a mailing-list manager: An MUA displaying the message could
display the original From: header - undoing some of the damage that
(IMHO) dkim/dmarc has perpetrated in forcing MLMs to rewrite From:
From what I can tell, MUA's seem to have little interest in DKIM/DMARC
at all, which is unfortunate. I wouldn't count on something like this
changing that.
Mike
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