http://blogs.technet.com/john_westworth/archive/2007/11/29/want-to-get-exchange-2007-sp1.aspxhttp://www.microsoft.com/downloads/details.aspx?FamilyId=44C66AD6-F185-4A1D-A9AB-473C1188954C&displaylang=en Overview Microsoft Exchange Server 2007 Service Pack 1 (SP1) has been designed specifically to help meet the challenges of any business anden-GBCommunityServer 2.1 SP1 (Build: 61025.2)