Microsoft has released the following Update Rollups.
Update Rollup 10 (UR10) for Exchange Server 2007 SP1.
If you’re running Exchange Server 2007 SP2 or later, this update does not apply to you. You only need to download the latest update for the version of Exchange that you’re running. Update Rollups should be applied to Internet facing Client Access Servers before being installed on non-Internet facing Client Access Servers.
Update Rollup 4 (UR4) for Exchange Server 2007 SP2.
Update Rollup 3 (UR3) for Exchange Server 2010.
– Thanks, Jinesh.