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check_qmailq
Credits
Various bits of code, scripts, and procedures were put together with information from John Simpson's qmail.jms1.net website. It's an excellent resource on managing and setting up a Qmail server.
The original plugin is from http://www.openfusion.com.au/labs/nagios/
Download the check plugin:
cd /usr/local/nagios/libexec
wget http://www.dwadson.com/files/nagios/check_qmailq
chmod ugo+x check_qmailqThe check command takes the syntax of check_qmailq -w count -c count [-W pre_count] [-C pre_count] [-q /path/to/qmail-qstat]. The warning and critical message counts can be adjusted to your preference. Edit /usr/local/nagios/etc/nrpe.cfg and add entries for the services you want to check, such as:
command[check_qmailq]=/usr/local/nagios/libexec/check_qmailq -w 25 -c 50Restart NRPE
Nagios user permissions to access Qmail queue
In order to access the Qmail queue, the Nagios user needs to be added to the qmail group. Since that user only has read access to the queue, this isn't a security risk (or at least much of one...). Edit /etc/group:
qmail:x:162:nagiosNagios Server Configuration
Since you should have figured out how to install a Nagios server in the first place, I'm not going to provide you with instructions on how to configure a host or service entry for your mail server other than the syntax for the service check_command would be check_nrpe!check_qmailq
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