monitoring service to detect when email is not received

Posted by DGM on Server Fault See other posts from Server Fault or by DGM
Published on 2012-11-19T16:44:14Z Indexed on 2012/11/20 11:07 UTC
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email

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monitoring

I would like to monitor an email server - not whether the port is open and receiving, but rather that a "canary" message sent every so often actually arrives somewhere else. I have had a problem with a server getting firewalled off and no one noticing that cron jobs are not coming from the machine for a few weeks. Of course, the machine itself cannot send out a notification if it is having problems, so this requires an outside service. Any ideas?

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