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qmail tips

September 3, 2013

I found the following qmail tips to be valuable.

To check the log file:

less /var/log/qmail/imap4/current

Max connections

vi /var/qmail/supervise/imap4/run

Change line with “tcpserver” to have “-c ###” ### of connections.

Count imap connections per IP address

netstat -nt | grep ':143' | awk -F":" '{print $2}' | awk '{print $2}' | sort -n | uniq -c | sort -rn

 

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From → Technology

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