When Server-Side Synchronization is configured between Microsoft Dynamics CRM Online and Exchange Server (on-premises), you receive one of the following errors after attempting to enable a mailbox:
- The email message "Test Message" cannot be sent because the credentials specified in the associated email server profile are incorrect or have insufficient permissions for sending email. The owner of the email server profile <Email Server Profile name> has been notified.
- Email cannot be received because the credentials specified in the associated email server profile are incorrect or have insufficient permissions for receiving email. Mailbox <Mailbox name> didn't synchronize. A notification about this is posted on the alerts wall for the owner of the email server profile <Email Server Profile name>.