When a cluster is configured, do the Unity Connection-specific tasks only on the primary (active) server.

1. In Unity Connection Administration, expand Users and select Users. On the Edit User Basics page, in the Edit menu, select Unified Messaging Accounts. On the Unified Messaging Accounts page for the user, confirm that the user is associated with a unified messaging service on which single inbox is enabled.

2. If you created an Exchange 2010 mailbox for the unified messaging services account, and if Exchange mailboxes for the affected users were moved from one Exchange 2003 mailbox store to another, delete the Exchange 2010 mailbox.

3. In Cisco Unity Connection Administration, expand Users and select Users. On the Edit User Basics page, in the Edit menu, select Unified Messaging Accounts. On the Unified Messaging Accounts page for the user, confirm that single inbox is enabled in one of the user’s unified messaging accounts.

4. In Cisco Unity Connection Administration, expand Users and select Users. On the Edit User Basics page, in the Edit menu, select Unified Messaging Accounts. On the Unified Messaging Accounts page for the user, confirm that Unity Connection is configured to use the correct Exchange email address.

5. In Cisco Unity Connection Administration, expand Users and select Users. On the Edit User Basics page, in the Edit menu, select SMTP Proxy Addresses. On the SMTP Proxy Addresses page for the user, confirm that there is an SMTP proxy address that matches the user’s Exchange mail address.