Hello,
I’m surprised to see that dnsblog can issue up to 40 absolutely identical DNS
requests per seconds, for postscreen, when my setup reads:
postscreen_dnsbl_action = enforce
postscreen_dnsbl_sites = MY-API-KEY.combined.mail.abusix.zone
postscreen_dnsbl_reply_map =
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 ?
By default, the Postfix SMTP server enforces
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 ?
>
> By
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 ?
Regards
Kevin
___
Postfix-users mailing list --
Hello
Is there any option to set up how long the smtpd process will exist ?
I noticed that after the connection ends, the smtpd process still exists
for several dozen seconds. Can this time be shortened to a few seconds?
Thank you.
--
Pozdrawiam.
Jacek Grabowski.
patpro--- via Postfix-users:
> Hello,
>
> I'm surprised to see that dnsblog can issue up to 40 absolutely
> identical DNS requests per seconds, for postscreen, when my setup
> reads:
postscreen does not duplicate DNS caching. DNS lookup results are
already cached in a non-Postfix DNS resolver
Jacek Grabowski via Postfix-users:
> Hello
>
> Is there any option to set up how long the smtpd process will exist ?
> I noticed that after the connection ends, the smtpd process still exists
> for several dozen seconds. Can this time be shortened to a few seconds?
> Thank you.
That would bad
Jacek Grabowski via Postfix-users:
> Is there any option to set up how long the smtpd process will exist ?
> I noticed that after the connection ends, the smtpd process still exists
> for several dozen seconds. Can this time be shortened to a few seconds?
> Thank you.
Wietse:
> That would bad for
I might had used the wrong terminology. I was mainly referencing delayed
email that occurs with Grey listing. Most of the delay email for me is
either Google or Yahoo.
Matthew
On 9/29/2023 7:40 PM, Wietse Venema via Postfix-users wrote:
Matthew McGehrin via Postfix-users:
Hi Kevin.
If the
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
Matthew McGehrin via Postfix-users:
> Hi Kevin.
>
> If the delays are being caused by bounce message processing, you could
Then you should configre Postfix to block undeliverable mail.
- Don't accept mail for non-existent recipients.
- Don't forward SPAM to other systems.
Wietse
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