"Error Message: Failure: Email settings saved. But error occurred while trying to check connection with mail server - Unable to open mailbox in READ/WRITE mode."

"Error Message: Failure: Email settings saved. But error occurred while trying to check connection with mail server - Unable to open mailbox in READ/WRITE mode."

Hello,

The support mailbox, which was previously operational, now reports that the last attempt to retrieve mail was made on 30/05/2022 at 19:16.

If the Service Desk Plus Cloud software mailbox settings are re-entered, the following error message appears:
==== ====
Error Message: Failure:Email settings saved. But error occurred while trying to check connection with mail server - Unable to open mailbox in READ/WRITE mode.
==== ====


Do you know if any changes were made that would prevent the mailbox account settings from being saved, resulting in the above error message?

I hope you can help? 


=====================================================
Mail Server Settings:
==== ==== ==== ==== ====
Incoming Mail Settings:

Server Name:         outlook.office365.com
Email Type: IMAPS (Port 993) + TLS enabled
Fetch interval:        2-  Minutes
Unknown users: Accept emails from

==== ====
Outgoing Mail Settings:

Server Name:         smtp.office365.com
Email Type:       SMTP With TLS (Port 587)
=====================================================

Kind regards,
David.

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