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?
Monitoring SMTP
Modified on 2025-06-10 16:45:11 +0200
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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.
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.
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
Mar, 2018 - Permalink