On Wed, 29 Jun 2022, Alessandro Vesely wrote:
Would you please show an example, realistic or not, where not stopping for
psd=y in step 2 leads to a useful result?
Keeping in mind that this is an arcane corner case that affects perhaps a
few hundred of the 100,000 domains that are likely to publish DMARC
records, and it doesn't matter in practice:
A site for aficionados of various kinds of pets:
_dmarc.petlovers.com p=reject psd=u
_dmarc.cats.petlovers.com psd=y
_dmarc.dogs.petlovers.com psd=y
A message from management:
From: [email protected]
DKIM-Signature: d=petlovers.com
Subject: Dogs are bad
etc.
I'm not saying this is particularly likely, but it's no less likely than
any other contrived psd=y scenario so I hope we can stop now and move on
to something more important.
Regards,
John Levine, [email protected], Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly
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