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Monitoring SMTP



I stopped receiving alerts and found out that my SMTP server was blocked by ISP. Is there a way to monitor this and get notified whenever it gets blocked?

sensor smtp smtp-relay-server

Created on Mar 6, 2018 2:56:52 AM

1 Reply



Hello there,

Thanks for your support inquiry, we appreciate your contact regarding the matter

I would recommend to use our SMTP Sensor. The Sensors monitors the SMTP response time and can send a test mail with every check.

For more information about this sensor type, please follow this link: SMTP Sensor

Please also take a look at our Roundtripp Sensors. Those sensors ensure the end-to-end delivery of emails and make it possible to monitor availability and performance of a complete email delivery process: Round Trip Sensors

Kind regards,
Birk Guttmann, Tech Support Team

Created on Mar 6, 2018 12:32:36 PM by  Birk Guttmann [Paessler Support]

Last change on Feb 22, 2023 11:03:46 AM by  Brandy Greger [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.