On Fri, Jun 28, 2024 at 08:40:20AM +0200, Benny Pedersen via mailop wrote:
> > Does anyone here have a UTF-8 email address you'd let me send some
> > test messages to?
>
> so you know any dns servers that support utf-8 ?
[ Benny, here and on postfix-users, I'd like to encourage you to refrain
from answering questions to which you don't know the answer... ]
All DNS servers support "UTF-8", because non-ASCII UTF-8 labels
(U-labels) are encoded in DNS to A-labels via punycode and prefixed
with the "xn--" "ACE prefix".
Thus my domain "духовный.org" becomes "xn--b1adqpd3ao5c.org":
$ dig +noall +nottl +nocl +ans -t soa +idnin +noidnout духовный.org
xn--b1adqpd3ao5c.org. SOA nsb.imrryr.org.
postmaster.dukhovni.org. 550956 3600 1200 604800 1200
as far as DNS servers and resolvers are concerned. The conversion from
U-labels to A-labels (and perhaps back) happens in IDNA-aware
applications. "On the wire" there are no U-labels.
> dns servers that set the glue record must support utf-8, not just idn,
> what will happend if both idn and utf-8 is to be working ?
This is simply wrong.
--
Viktor.
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