Can anyone give me the best practice method to upgrade an Exchange Server 2007 from RTM to SP2? Server is as below.
Exchange 2007 (rtm) is running on a single Windows Server 2003 x64 DC / Lan.
Server is running Windows Server 2003 x64 with Service Pack 3.
Again Exchange and AD are both running on one server in this LAN.
I have tried installing Service Pack 1 for Exchange 2007 before and it has failed and I had to just reinstall the image of the original rtm backup.
Any recommendations would be appreciated.