On Sunday 6 October 2019 16:34:37 CEST, Keith Moore wrote:
I can't find any justification at all for ever using the UTF-8
form of an IDN in EHLO. IMO it should be a MUST NOT.
It is a MUST NOT.
IMO it also is a bug magnet, and it's best to step out of its way by using
all-ASCII server names both in EHLO and in Received fields. I might be
wrong, of course.
Arnt
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