[pfx] Re: SMTPUTF8
Danjel Jungersen via Postfix-users <[email protected]> Fri, 3 Jul 2026 08:14:15 +0200
| Newsgroups | gmane.mail.postfix.user |
|---|---|
| Organization | Jungersen Grafisk ApS |
| Message-ID | <[email protected]> |
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On 03-07-2026 03:04, John R. Levine via Postfix-users wrote:
>> The receiver claims that he receives mail from other people using the
>> IDN version.
>
> Honestly, I'm sceptical. My guess is that the other people have the
> A-label version of the address in their address book, and his mail
> program doesn't show him the address in incoming mail.
>
> I have done a lot of EAI related work for ICANN and I can tell you
> that using IDN mail addresses is one of those things that is supposed
> to work but is painful in practice. A lot of software almost but not
> quite implements it, as we saw here. Postfix support is fine (one of
> the things I did was to test it and it got a gold star) but you have
> to turn it on.
By turning on, do you mean for incoming mails?
A search tell me that postfix has it turned on by default.
postconf show this:
smtputf8_autodetect_classes = sendmail, verify
smtputf8_enable = ${{$compatibility_level} <level {1} ? {no} : {yes}}
If I'm not mistaken, my server did work for this outgoing e-mail, right?
OR...??
I have noted the warning about enabling it, and I have no plans for
hosting any of these domains myself, but will do my best to make my
users happy.
--
Med venlig hilsen/Kind regards
Danjel Jungersen
Mail: [email protected]
Mobile: +45 20 42 20 11
Jungersen Grafisk ApS,
Holsbjergvej 39, DK-2620 Albertslund,
Denmark.
Tel: +45 43 64 10 00
WEBSHOP: PRINTLIGHT.DK <https://www.printlight.dk> | WWW.JUNGERSEN.DK
<https://www.jungersen.dk>
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<div class="moz-cite-prefix">On 03-07-2026 03:04, John R. Levine via
Postfix-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:[email protected]">
<blockquote type="cite" style="color: #007cff;">The receiver
claims that he receives mail from other people using the IDN
version.
<br>
</blockquote>
<br>
Honestly, I'm sceptical. My guess is that the other people have
the A-label version of the address in their address book, and his
mail program doesn't show him the address in incoming mail.
<br>
<br>
I have done a lot of EAI related work for ICANN and I can tell you
that using IDN mail addresses is one of those things that is
supposed to work but is painful in practice. A lot of software
almost but not quite implements it, as we saw here. Postfix
support is fine (one of the things I did was to test it and it got
a gold star) but you have to turn it on.</blockquote>
<p>By turning on, do you mean for incoming mails?</p>
<p>A search tell me that postfix has it turned on by default.<br>
postconf show this:<br>
smtputf8_autodetect_classes = sendmail, verify<br>
smtputf8_enable = ${{$compatibility_level} <level {1} ? {no} :
{yes}}</p>
<p>If I'm not mistaken, my server did work for this outgoing e-mail,
right?<br>
OR...??</p>
<p>I have noted the warning about enabling it, and I have no plans
for hosting any of these domains myself, but will do my best to
make my users happy.</p>
<div class="moz-signature">-- <br>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title></title>
Med venlig hilsen/Kind regards<br>
Danjel Jungersen<br>
Mail: <a class="moz-txt-link-abbreviated moz-txt-link-freetext"
href="mailto:[email protected]">[email protected]</a><br>
Mobile: +45 20 42 20 11<br>
<br>
Jungersen Grafisk ApS,<br>
Holsbjergvej 39, DK-2620 Albertslund,<br>
Denmark.<br>
Tel: +45 43 64 10 00<br>
<br>
<a href="https://www.printlight.dk" moz-do-not-send="true">WEBSHOP:
PRINTLIGHT.DK</a> | <a href="https://www.jungersen.dk"
moz-do-not-send="true">WWW.JUNGERSEN.DK</a><br>
<br>
<br>
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