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Connecting to IMAP Server: Command received in Invalid state.

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0

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?

imap prtg smtp

Created on Jul 25, 2022 8:07:41 AM



2 Replies

Accepted Answer

Votes:

0

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?

Created on Jul 26, 2022 7:31:25 AM by Timo Dambach [Paessler Support]



Votes:

0

Hi,

using Port 993 was the solution.

Thanks for help!

Created on Jul 27, 2022 7:26:55 AM




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.