On 2022-04-29 at 09:06:55 UTC-0400 (Fri, 29 Apr 2022 21:06:55 +0800)
 <al...@coakmail.com>
is rumored to have said:

Hello,

Where can I set the limit for sending amount for a given period? for
instance, a user can send max 200 messages per 24 hours.

There is no such facility in Postfix itself.

One could (in principle) implement that sort of restriction via the policy service interface or in a milter. It appears that PolicyD has support for quotas of various sorts (https://wiki.policyd.org/quotas) but I can't attest to it's usability.


--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire

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