dovecot - Mar 2022 - Dovecot Submission - rate limiting

Hello,

is there any way to rate limit submission mail (counting per user) when 
using Dovecot/Submission (no Postfix)?

Using a milter seems impossible.
Using Dovecot Events seems "too" global (not per users
discrimination).
Maybe rate-limiting has to be external and then include in the pass_db 
query ?


Thank your for any hints.
Isma?l Tanguy

> is there any way to rate limit submission mail (counting per user) when
> using Dovecot/Submission (no Postfix)?
> 
> Using a milter seems impossible.
Why? If you did not write this, I would even suggest using something like
mailfromd

> On 31/03/2022 17:00 itanguy at univ-brest.fr wrote:
> 
>  
> Hello,
> 
> is there any way to rate limit submission mail (counting per user) when 
> using Dovecot/Submission (no Postfix)?
> 
> Using a milter seems impossible.
> Using Dovecot Events seems "too" global (not per users
discrimination).
> Maybe rate-limiting has to be external and then include in the pass_db 
> query ?
> 
> 
> Thank your for any hints.
Hi!

Dovecot submission is not an MTA, it *always* requires something behind. You
cannot use milters with it. If your MTA supports XFORWARD/XCLIENT you can use
submission_relay_trusted to allow this information to be forwarded to the MTA.

Aki
> Isma?l Tanguy