Exchange Reporter Plus uses several cmdlets including Test-WebServicesConnectivity, Test-ActiveSyncConnectivity, and Test-OwaConnectivity to test connectivity and populate its monitoring reports. These cmdlets test connectivity to a mailbox through components and protocols such as ActiveSync, POP3, and IMAP4. By default, a system generated test user mailbox, extest_<GUID> is used for this purpose.
If this mailbox is not present in your organization, it can be created either through Exchange Reporter Plus or manually by using the Exchange Management Shell.
Once the test user mailbox is created, the connectivity reports will be populated with data after the next scheduled data gathering.
Instead of using extest_<GUID>, you can specify a mailbox in your organization created for this purpose. To make Exchange Reporter Plus use this mailbox, perform the following steps.
The connectivity reports will be populated with data once the next scheduled data gathering takes place.