Hi all! I've been reading up on how to accomplish our migration from Exchange 2k3 Standardto 2k7 Standard. Right now, our network has a DMZ segment with Exchange 2k3 installed on a Win 2k3 AD server. Let's say this is domain "ActDir2" with IP range 10.10.10.0/24. On the LAN segment, we have another Win 2k3 AD server on a different domain, let's say "ActDir1" with IP range 10.10.11.0/24. For now, our PIX 515 is handling the routing and firewalling. This will be swapped out for an ASA 5505 in the near future. Wewould of course prefer to do this migration with the minimum downtime, overa weekend maybe. We already have2 of eachWin 2k8 Standard and Exchange 2k7 Standardlicenses. We would like to put the new Win 2k8/Exchange 2k7 server in theLAN using the existing "ActDir1" AD. We need OWA and calendaring. Is there anydetailed documentation for this migration scenario? If not, any pointers as to what is the best way to accomplish this? Thanks bunches.

Hi, Exchange 2007 SP1 is the only version of Exchange Server that is supported for installation on Windows Server 2008. You may refer to below articles: Exchange Server and Windows Server 2008 http://msexchangeteam.com/archive/2007/08/16/446709.aspx http://msexchangeteam.com/archive/2008/03/05/448338.aspx http://msexchangeteam.com/archive/2006/10/27/429522.aspx How to Install Exchange 2007 SP1 Prerequisites on Windows Server 2008 http://technet.microsoft.com/en-us/library/bb691354(EXCHG.80).aspx How a transition from Exchange Server 2000/2003 to Exchange Server 2007 is performed. http://www.msexchange.org/tutorials/Transitioning-Exchange-2000-2003-Exchange-Server-2007-Part1.html http://www.msexchange.org/tutorials/Transitioning-Exchange-2000-2003-Exchange-Server-2007-Part2.html http://www.msexchange.org/tutorials/Transitioning-Exchange-2000-2003-Exchange-Server-2007-Part3.html -Jason