Hi Kevin.
If the delays are being caused by bounce message processing, you could
run a second instance dedicated to just processing delayed messages
using fallback_relay.
You can also make adjustments to the individual queues in master.cf, one
tweak I use is increasing the flush rate to 1800.
IE:
flush unix n - n 1800? 0 flush
Thank you.
Matthew
On 9/29/2023 9:34 AM, Wietse Venema via Postfix-users wrote:
Wietse Venema via Postfix-users:
Kevin Cousin via Postfix-users:
Greetings List,
We recently had an issue and the active queue was full and slowed
down all new mail delivery. Is it possible to rate limit the mail
flow to protect smtpd from a massive mail input ?t as increasing the
in_flow_delay.
Can you answer one question: is mail arriving too fast, or are
deliveries too slow? If the problem is the latter, then your queue
may be full of MAILER-DAEMON messages.
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