On Fri, Jul 24, 2026 at 11:59:04AM +0200, Thomas Franz via Postfix-users wrote:
> Hello,
>
> I have a config with a "slow transport", but I have examples with less than
> 5 sec in my log (see below).
>
> Is it a wrong configuration or a wrong interpretation?
>
> master.cf:
>
> smtpslow unix - - n - 1 smtp
> -o syslog_name=postfix/slow
Misconfiguraation. The below are queue manager parameters.
> -o smtpslow_destination_rate_delay=5s
> -o smtpslow_destination_concurrency_limit=1
> -o smtpslow_destination_concurrency_failed_cohort_limit=10
They have no effect when restricted to the delivery agent. Move these to
main.cf.
--
Viktor. 🇺🇦 Слава Україні!
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