Thank you. I will re-visit this next after the proxy problem is solved.
Btw, thank you very much for suggesting HAProxy's proxy protocol. I've
succeeded in getting it partially to work (I'm not done yet, there's
more to configure), and I can see external IP addresses in postfix and
dovecot being recognized. I guess the primary issue is solved.
Best regards,
Sam
On 23/12/2022 11:09 AM, mailm...@ionos.gr wrote:
In my case, I reject invalid HELO names with:
reject_invalid_helo_hostname
reject_non_fqdn_helo_hostname
I've run postfix like this for about 10 years now without any problems. I don't
expect others to use such restrictions but it works for me.
On Fri, 23 Dec 2022 09:51:48 +0400 Samer Afach <samer.af...@msn.com> wrote:
I see. Thank you for the explanation. So the right way to state this is
that HELO/EHLO requires a valid FQDN/hostname only for MTAs, and for
MUAs it's just ignored because authentication is what matters.
Cheers,
Sam
