I suggest the two places that refer to IDNS say
Internationalized domain names MUST berepresented as A-labels as
described in [RFC5891].
That's a current standard, and A-labels are what ToASCII was supposed to
produce.
That's a technical change to the DKIM Signing specification. Plus, it 'fixes'
a
problem that has not yet been reported for DKIM.
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net
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