This plugin gets the count of emails in the mail queue of NoSpamProxy.
You can define levels for warning and critical state. If the email count in the mail queue exceeds these levels, the service will enter a warning or critical state!
You must configure a Windows user for script execution in C:\ProgramData\checkmk\agent\check_mk.user.yml:
Automatic inventory is supported. Install the agent and one service called "NSP Mail Queue" will be created.