Any validator is free to add whatever cleverness they wish. However
the degree of cleverness or its usefulness does not give it status
within the IETF specification.
Who is this procrustean "we"?
The IETF. The DKIM working group. The subject line. Probably all 3.
d/
--
Dave Crocker
Brandenburg InternetWorking
<http://bbiw.net>
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