When you do a test access from the Email Router you get the following error message:
Name: CRM User
Incoming Status: Failure - No results were found.
The event viewer error is as follows:
#26090 - An error occurred while opening mailbox email@example.com. Microsoft.Crm.Tools.Email.Providers.EmailException: No results were found.
2. Expand Recipient Configuration
3. Click on Mailbox
4. Right Click on the CRM User and select properties
5. On the General Tab make sure “Hide from Exchange address lists” is NOTchecked.