Verify mailbox accessibility using EWS

Follow the below steps to verify a mailbox which is accessible using EWS

• Browse to https://testconnectivity.microsoft.com.
• Select Office 365 tab if you are using Office 365.
• Click 'Service Account Access'.
• Enter the Target mailbox email address.
• Enter the service account user name and password. If are using admin credentials on the connector, enter the exact same user name and password.
• Verify Specify Exchange Web Services URL and specify the URL (example: https://myserver/EWS/Exchange.asmx).
• If you are using Exchange Server, do not check Use Exchange Impersonation. If you are using Office 365, and using impersonation, check the box.
• Check Ignore Trust for SSL.
• Click Perform Test.
• Verify overall result once results are displayed, and click Expand All.