Update Rollup 8 for Exchange Server 2007 Service Pack 1 (SP1) resolves issues that were found in Exchange Server 2007 SP1 since the software was released. This update rollup is highly recommended for all Exchange Server 2007 SP1 customers.
For a list of changes that are included in this update rollup, see KB968012.

This update rollup does not apply to Exchange Server 2007 Release To Manufacturing (RTM). For a list of update rollups applicable to Exchange Server 2007 RTM, refer to the section Update rollups for Exchange Server 2007 RTM in the Knowledge Base article KB937052.

This is a cumulative update rollup and replaces the following:

• KB945684 Update Rollup 1 for Exchange Server 2007 Service Pack 1 (KB945684)
• KB948016 Update Rollup 2 for Exchange Server 2007 Service Pack 1 (KB948016)
• KB949870 Update Rollup 3 for Exchange Server 2007 Service Pack 1 (KB949870)
• KB952580 Update Rollup 4 for Exchange Server 2007 Service Pack 1 (KB952580)
• KB953467 Update Rollup 5 for Exchange Server 2007 Service Pack 1 (KB953467)
• KB959241 Update Rollup 6 for Exchange Server 2007 Service Pack 1 (KB959241)
• KB960384 Update Rollup 7 for Exchange Server 2007 Service Pack 1 (KB960384)

Download the Rollup:
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=e1f5c8b2-c4f2-4eba-849b-e464d4f2869c