telnet localhost 25
220 server.mydomain.net ESMTP Postfix (Debian/GNU)
AUTH LOGIN
334 VXNlcm5hbWU6
c29tZXVzZXI=
(someuser)
334 UGFzc3dvcmQ6
c29tZXBhc3M=
(somepass)
454 4.7.0 Temporary authentication failure: generic failure

On Thu, Jun 23, 2022 at 03:09:36AM -0300, Viktor Dukhovni wrote:
As for why authentication is failing, is "saslauthd" actually installed
and running with a sensible backend (e.g. "-a pam") specified?.

On 23.06.22 09:34, Luc GMail wrote:
Yes.

# ps aux | grep saslauthd
root     32304  0.0  0.2  18364  2512 ?        Ss   07:37   0:00
/usr/sbin/saslauthd -a pam -c -m /var/run/saslauthd -n 2
root     32305  0.0  0.0  18364   916 ?        S    07:37   0:00
/usr/sbin/saslauthd -a pam -c -m /var/run/saslauthd -n 2

on debian, saslauths is supposed to run with options "-c -m /var/spool/postfix/var/run/saslauthd"
OR by symlinking /run/saslauthd to /var/spool/postfix/var/run/saslauthd

https://wiki.debian.org/PostfixAndSASL

it's better than disabling chroots wherever possible.

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