[Cialug] postfix on Ubuntu

[Jarrod Igou]

Can you elaborate about the failure / difference?  What are those "bad"
systems sending, vs what is the "good" system sending?

Rambling down the hostname rabbit hole, do you get the same response from
the different flavors when you ask the server what its hostname is?

$hostname
$hostname -s
$hostname -f




On Fri, Jan 27, 2023 at 3:17 PM L. V. Lammert <lvl at omnitec.net> wrote:

> > Could be lots of reasons. Are you running postfix chroot? Then there may
> > be a different copy of main.cf, if you edit the wrong one with vi it may
> > break the links and you'll not get the expected behavior.
> >
> > -dc
> >
> Doesn't seem to be the case?
>
> $locate main.cf
> /etc/postfix/main.cf
> /etc/postfix/main.cf.proto
> /etc/postfix/main.cf.unknownhostname
> /usr/share/postfix/main.cf.debian
> /usr/share/postfix/main.cf.dist
> /usr/share/postfix/main.cf.tls
>
> myhostname IS set correctly in main.cf:
>
> $postconf | grep myhostname
> lmtp_lhlo_name = $myhostname
> milter_macro_daemon_name = $myhostname
> myhostname = snowman.winningtech.com
> myorigin = $myhostname
> smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
> smtpd_proxy_ehlo = $myhostname
>
> Identical to the working installance on Ubuntu 14:
>
> $postconf | grep myhostname
> lmtp_lhlo_name = $myhostname
> milter_macro_daemon_name = $myhostname
> myhostname = bandit.winningtech.com
> myorigin = $myhostname
> smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
> smtpd_proxy_ehlo = $myhostname
>
> The only difference that shows is v3.1 vs. v3.3:
>
> Working:
>
> $postconf mail_version
> mail_version = 3.1.0
>
> Not working:
>
> $postconf mail_version
> mail_version = 3.3.0
>
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> https://www.cialug.org/cgi-bin/mailman/listinfo/cialug
>