http://blogs.technet.com/robse/archive/2008/11/21/update-rollup-5-for-exchange-server-2007-sp1-has-been-released.aspxUpdate Rollup 5 for Exchange Server 2007 SP1 (KB953467) Download information for Update Rollup 5 for Exchange 2007 SP1 The rollup is available now via the download center at: http://www.microsoft.com/downloads/details.aspx?FamilyId=652ED33A-11A1-459C-8FFE-90B9CBFE7903&displaylang=enen-USCommunityServer 2.1 SP1 (Build: 61025.2)