On 5/13/2025 8:15 AM, John R Levine wrote:
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.
This demonstrates a pretty classic error in how Internet technicians
discuss deployment and adoption, completely missing the difference
between users and operators (and app providers) and their very, very
different incentives and control.
Recipients who are not computer scientists -- and even many who are --
have no control at all over adoption of capabilities on the platforms
they use. At most, they can control their choice of user agent, but
only if that is separate from the platform they use. (Which does not
help if the function is being deployed in the infrastructure, of course.)
So, no, the case you cite does not provide an incentive for adoption.
Anymore that it worked for DMARC.
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net
bluesky: @dcrocker.bsky.social
mast: @[email protected]
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