Check manual page of nullmailer_mailq

Length of the nullmailer mailqueue

This check monitors the number of deferred mails in the outgoing mail queue, as sent by the linux agent of Check_MK.

This check creates one service per host which represents the state of the outgoing mailqueue.

The check will result in WARNING/CRITICAL states when the number of items in the queues have reached the defined thresholds.

Discovery

On each system which provides the nullmailer-send command one service is created.