Jaroslaw Grzabel wrote:
Hi,

I'm struggling with new SMTP server and I noticed that sometimes it just hangs because of:

Jul 2 14:14:21 smtp postfix/master[17716]: warning: service "smtp" (25) has reached its process limit "50": new clients may experience noticeable delays Jul 2 14:15:06 smtp postfix/master[17716]: warning: to avoid this condition, increase the process count in master.cf or reduce the service time per client

type in:
# postconf -e default_process_limit=100
and then
# postfix reload



The problem is when it happens I can't do nothing just reload postfix.

Running postfix reload when postfix is busy just makes things worse. Clear the clog, then flush.

Is there any way to sort it out ? I increased that value now, but for me it's not solving my problem because instead of increasing that I would rather like to postfix struggles with with on its own somehow by reload configuration or ... I don't know.

Your mailserver receives more connections than postfix is configured to accept. Increase the number of connections allowed by increasing default_process_limit.


Maybe is there any timeout to setup, because after that when I took a look at netstat it showed me a lot of connections from 127.0.0.1 (greylisting daemon).

No, the problem is more incoming connections than postfix is configured to accept.


Thank you for any help in advance.

Regards,
Jarek

Look at http://www.postfix.org/documentation.html under the "Problem Solving" section.


  -- Noel Jones

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