The sensor requires that the PRTG web server accepts incoming HTTPS requests.
The sensor requires credentials for Microsoft 365 in the settings of an object that is higher in the object hierarchy.
How to set up the Microsoft 365 Mailbox Sensorīefore you can add the sensor to monitor information of a Microsoft 365 mailbox, some preparations are necessary. When adding the sensor, you can choose different folders in the mailbox or you can even add a mailbox account from a different user by providing the principal user name of a shared mailbox in the Add Sensor dialog. The sensor shows the number of emails in the mailbox, the age of newest and oldest emails, and it provides several filter options. To ensure that you can still monitor Microsoft 365 mailboxes after October 1, 2022, the Microsoft 365 Mailbox Sensor, which supports modern authentication, is now available in all PRTG editions. The article Deprecation of Basic authentication in Exchange Online is updated continuously. 🔎 You can read more about the deprecation of basic authentication in Exchange Online directly in the Microsoft 365 portal.