01.12.2024 19:07, Wietse Venema via Postfix-users wrote:
Michael Tokarev via Postfix-users:
Dec 01 18:42:57 isrv postfix/smtp[3009]: < mailly.debian.org[82.195.75.114]:25:
250-SMTPUTF8
Dec 01 18:42:57 isrv postfix/smtp[3009]: > mailly.debian.org[82.195.75.114]:25: MAIL
FROM:<m...@tls.msk.ru> SIZE=586 BODY=8BITMIME
The remote server announces SMTPUTF8, but Postfix does not request
SMTPUTF8. It is as if the SMTP client has "smtputf8_enable = no".
I need to see output from:
postconf -P | grep utf8
postconf | grep utf8
Everything there is at default settings (besides compatibility_level):
# fgrep -ri utf /etc/postfix/
# postconf -P | grep utf8
# postconf | grep utf8
smtputf8_autodetect_classes = sendmail, verify
smtputf8_enable = ${{$compatibility_level} <level {1} ? {no} : {yes}}
strict_smtputf8 = no
# postconf compatibility_level mail_version
compatibility_level = 3.7
mail_version = 3.7.11
Perhaps the SMTP client should refuse to deliver a message that
requires SMTPUTF8, if the delivery agent has "smtputf8_enable = no".
2 - Encode headers before invoking the Postfix sendmail command.
This will increase the number of destinations that the message
can be sent to.
What I asked in my email is this one:
If postfix sendmail command is THE one which added these headers,
can't it encode them properly too?
The Postfix sendmail command does not add headers. The Postfix
cleanup server does that.
Yeah. I omitted this detail for brevity.
So what is a principled approach to encode Postfix-generated headers?
To not do it, or what? I would not want to special-case the GECOS info.
The question is two-fold.
Given the fact there hasn't been issues with this for many years, maybe
there's no need to do that. After all, most folks switched to using more
advanced MUAs which does all that's required (and sometimes more). Also,
it is not common to have something 8-bit in GECOS *and* use local submission
like this (though maybe we don't know because such mail is lost due to be
rejected).
On the other hand, it shouldn't be a very difficult task to implement this
for local submission given postfix has all the infrastructure available.
So I'd say postfix should do this if not only for completeness, but it is
definitely not at highest priority.
Thanks,
/mjt
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