in theory, there's no difference between theory and practice.
in practice, there's interoperability testing...
I'd think more conformance than interop, since I'd be surprised if there
were any ambiguity about the correct way to encode UTF-8 into punycode.
Do we know whether DKIM works IDNs? If not, what should we do about
that?
(I'm sitting in Apricot and this came up during an APCauce discussion.)
IDNs are all punycoded as xn--whatever and turn into normal domain
names. Nothing exotic there.
R's,
John
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