We have Exchange 2007 SP1 running on our our SBS 2008 domain controller. The BPA is obviously recommending that I upgrade to SP3. Firstly, is SP3 an essential update? Should everyone get this installed asap?? From what I've read it's mainly just an update to enable Exchange to run on Windows Server 2008 R2 - which we won't be doing. Also, are there any known installation issues or gotcha's to be aware of when installing? Cheers

First thing is -- Microsoft is giving limited support for 2007 Sp1 , only if you have sp3 you are going to be away from many bugs and microsoft support period ------- 90 % it should run without any issues.. Again its totally depends on your environment ------ No there are no known issue..Until you experience one. We can give out a solution for you..Satheshwaran Manoharan | Exchange 2003/2007/2010 | Blog:http://www.careexchange.in | Please mark it as an answer if it really helps you

Cheers. Are there any pre-installation checks or changes that must be done first?