The Exchange Agent provides the following features:
Continuous backup of the Exchange Server when Backup Exec Continuous Protection Server (CPS) is installed. The CPS Exchange backup job provides complete recovery to any point in time of the Information Store, including the latest complete transaction log. When you enable recovery points to run at intervals between the full backups, you can restore individual items at a point in time when the recovery point was created. Even without recovery points, you can restore individual items from a full backup.
The ability to restore individual databases or storage groups from non-snapshot backups by using the Recovery Storage Group feature of Exchange Server 2003. For Exchange Server 2007, you can restore snapshot backups to a Recovery Storage Group.