Hello together,

since today in the morning, we have a little problem with an SMTP-IMAP Round Trip Sensor.

I have updated our PRTG to Version 22.2.77.2204 via the Update function in the Web GUI. After the successfully update, this sensor is red with the message "Connecting to IMAP Server: Command received in Invalid state"

There were no other changes in our environment. Restart and recreating this sensor did not help. I checked the credentials and if the prtgadmin user is locked and so on.

Any ideas what else I can try out?

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Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

Hello,

This error message "Command received invalid state" can occur if no SSL connection can be established. The following articles might help here:

- https:cknotes.com/imap-login-bad-command-received-in-invalid-state.
- https:social.technet.microsoft.com/Forums/

Have you tried using Port 993 in the sensor settings?


Jul, 2022 - Permalink

Hi,

using Port 993 was the solution.

Thanks for help!


Jul, 2022 - Permalink