For the internal message delivery test, Exchange Online must be configured as follows:
For the external message delivery test, Exchange Online must be configured as follows:
The following software is required.
The test credentials must have the following permissions.
If you are using OAuth 2.0 authentication for the test, the required API permissions are:
See the following tables for the test targets and the required permissions for this test.
The following software is required.
| Valid Office 365 credential that was used to connect to Office 365. | 
See the following tables for the test targets and the required permissions for this test.