[Cialug] Postfix HELO

[Andrew Denner]

It would appear to be demanding a FQDN in the hello? When you telnet in,
what do you get if you run the command  from your telnet

hello [insert fqdn here]

On Thu, Aug 5, 2021 at 1:23 PM L. V. Lammert <lvl at omnitec.net> wrote:

> Got past the first issue, .. but this one is more of a stumper:
>
> Fixed the container hostname from 172.18.0.15 in generic:
>
> # cat /etc/postfix/generic
> #
> # Fix the outgoing domain from a cranky container
> #
> @localhost.local  @<fqdn>
>
>
> Now, however, some receiving email servers are getting blocked:
>
> 2021-08-05T14:14:10.448906-04:00 majordomo postfix/smtpd[178623]:
> disconnect from unknown[172.18.0.15] ehlo=1 mail=1 rcpt=1 data=1 quit=1
> commands=5
> 2021-08-05T14:14:11.006284-04:00 majordomo postfix/smtp[178627]:
> 6C9C473D1: to=<lvl at omnitec.net>, relay=mx2.omnitec.net[206.197.251.201]:25,
> delay=0.57, delays=0.01/0.01/0.31/0.24, dsn=5.0.0, status=bounced (host
> mx2.omnitec.net[206.197.251.201] said: 504 <majordomo>: Helo command
> rejected: need fully-qualified hostname (in reply to RCPT TO command)
>
> However, the HELO IS correct:
>
> $ telnet mx2 25
> Trying 206.197.251.201...
> Connected to mx2.
> Escape character is '^]'.
> 220 mx1.omnitec.net ESMTP
>
> Appreciate any thoughts, ..
>
>         Thanks!
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