> On May 14, 2025, at 11:24 AM, Matus UHLAR - fantomas via Postfix-users
> <[email protected]> wrote:
>
> On 14.05.25 10:37, vom513 via Postfix-users wrote:
>> I see docs on how to rate limit for certain networks / IPs - but can custom
>> rate limiting be applied to authenticated users ?
>
> postfwd as policy filter can do that
Thanks for the pointer. I have this working and matching messages, but it
seems that postfix proper’s rate limiting is still taking effect.
I have:
# limit max sends per minute
anvil_rate_time_unit = 60s
smtpd_client_event_limit_exceptions = $mynetworks
smtpd_client_message_rate_limit = 5
And I also have:
# smtpd delivery restriction processing
smtpd_recipient_restrictions = permit_mynetworks,
check_policy_service inet:127.0.0.1:10040,
permit_sasl_authenticated,
(I have much more for this, but just showing the relevant point in the sequence
for postfwd…)
I can see I had 10 hits (I tried to send 100 messages…):
root@orbital:/etc/postfix# postfwd2 -vv --dumpcache -f /etc/postfwd.cf | grep
count
Redundant argument in printf at /usr/sbin/postfwd2 line 301.
%rate_cache -> %sasl_username=smtpauth -> %RULEZEROSASL+1000_86400 -> @count
-> '10'
%rate_cache -> %sasl_username=smtpauth -> %RULEZEROSASL+1000_86400 -> @maxcount
-> '1000'
root@orbital:/etc/postfix#
Do I need to move ALL the rate limiting logic inside postfwd (and remove it
from main.cf) ?
Thanks.
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