Le 31/03/2022 à 16:08, Aki Tuomi a écrit :

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On 31/03/2022 17:00itanguy@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

Thanks for your answer. We find better to count at the Submission Step.

I try to use metric, but don't find yet the good parameters to see submission events :

metric submission_counter { filter = event=smtp_submit_finished fields = mail_from recipients data_size }

Submit some mails and then doveadm stats dump.

result stay null :

doveadm stats dump metric_name     field  count           sum     min     max avg    median stddev %95 submission_counter   duration      0         0          0 0        0.00       0           0.000 submission_counter   mail_from  0         0          0 0        0.00        0           0.000 submission_counter   recipients   0         0         0 0        0.00        0           0.000 submission_counter   data_size    0        0         0 0         0.00        0           0.000

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Ismaël Tanguy