Dovecot docker auto-responder - delegate to external SMTP

[Fabien KOCIK]

Hi Thomas,

Did you try to use submission_host configuration parameter in your 
Dovecot container ?

Source : 
https://doc.dovecot.org/configuration_manual/sieve/sieve_and_smtp_submission/

Regards.

Fabien

Le 19/10/2020 à 12:28, Thomas Pronold a écrit :
> Hi all,
>
> I have dockerized my dovecot setup. Everything works fine besides 
> auto-responder using sieve.
>
> Issue is that the my dovecot docker image does NOT come with a SMTP 
> which could be used for outgoing mail.
>
> My SMTP setup (postfix) is in another image/container.
>
> I want to keep it that way, so that dovecot and postfix have separate 
> images.
>
> So basically I have 2 containers running in the same internal network: 
> a) dovecot IP 192.168.10.11 b) postfix IP 192.168.10.22
>
> How do I have to configure dovecot so that it delegates all outgoing 
> (autoresponder) mails to the SMTP on IP 192.168.10.22.
>
> The postfix image is configured in a way that certain IPs are allowed 
> to send mails without authentication. So on postfix side I am set.
>
> Currently I did a quickfix: I added postfix to dovecot image and 
> configured postfix to use the relayhost 192.168.10.22 for mailing. 
> This works, still I would prefer having the dovecot image not 
> containing an postfix SMTP.
>
> Thanks
>
> Tom
>
>