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Check manual page of nullmailer_mailq

Checkmk Manual

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Nullmailer: Mailqueue Length

Distribution: official part of Check_MK
License: GPL
Supported Agents: Linux

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

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.


Empty string


One service is created on each system which provides the nullmailer-send command.