If Unity Connection is integrated with an LDAP directory: Navigate to Cisco Unity Connection Administration and verify the following:

• Expand System Settings and select LDAP Directory Configuration. Select the applicable LDAP directory configuration. On the LDAP Directory Configuration page, make sure the Mail ID field in Cisco Unified Communications Manager User Fields is synchronized with the mail in LDAP Attribute.

  This causes values in the LDAP mail field to appear in the Corporate Email Address field of the LDAP imported user.

• Expand Users and select Users. Select the applicable user. On the Edit User Basics page, enter the Corporate Email Address.

• Select Edit on the user page and then select Unified Messaging Account. On the Unified Messaging Account page of the user, make sure value in the Email Address field is specified.