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postfix slowing other services down

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paublo

ISP
Sep 14, 2006
127
US
Hi, i ran into an issue today were postfix didnt have enough processes to handle incoming smtp connections. This for whatever reason was causing pop/imap (dovecot) to take a long time to respond on the appropriate port.


after looking at server and finding nothing wrong i stopped postfix which got rid of the delay on port 110/143. I then turned on postfix and saw the delay for port 25/110/143.

What i then did was adjust default_process_limit in postfix which took care of the problem.

question is why would not enough processes in postfix slow other services down, dovecot 110/143?


 
BTW, i had plenty of bandwidth/mem/cpu on that server.
 
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