On 13/05/2025 17:15, John R Levine wrote:
On Tue, 13 May 2025, Alessandro Vesely wrote:
Let us not forget that one of the goals of DKIM2 is to make this kind
of munging unnecessary.
I also thought this was the desired solution to the mailing list
problem. In fact, since a DKIM2 verifier can verify the original
signature of the author's domain, it can issue a dmarc=pass in the
face of admissible transformations.
Right.
However, how does a list know which subscribers have a DKIM2 verifier?
They don't know, but I figure that's an incentive to get recipients to
use DKIM2 so their list users are happy.
Improvements are certainly an incentive to adopt. Yet, a mailing list
will not stop munging all of a sudden, collecting a cascade of rejects
and unsubscriptions. One change mailing lists could make is to make
munging a per-subscriber option, rather than per-list.
We should still stick to the curious, though improved, protocol above.
Um, I think you misspelled ugly hack that doesn't scale.
Ugly as it is, it is scaling perfectly...
Best
Ale
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