Here is a small post on how to setup pflogsumm on your CentOS mail server running Postfix. It takes advantage of logrorate being called nightly by cron.
1. Install pflogsumm
# yum install postfix-pflogsumm
2. Run a test
# /usr/sbin/pflogsumm /var/log/maillog
3. Update /etc/logrotate.d/syslog. Add the following:
prerotate
pflogsumm /usr/local/psa/var/log/maillog | mail -s "Postfix Log - `date`" [email protected]
endscript
And little script to send you log hourly if you send over 100 emails per hour.
Make sure to add it to your hourly cron job.
#!/bin/sh
hour_now=$(date | awk '{print $2,"", $3, substr($4,0,2)}')
var1=$(grep "$hour_now" /usr/local/psa/var/log/maillog|pflogsumm)
if (( $(echo "$var1" | sed -n '/ delivered$/p' | tr -d '[:alpha:]') > 100 ));
then
echo $var1 | mail -s "Postfix Log - `date`" [email protected]
fi