We are upgrading to server 2008 R2 over the summer. The current exchange server is on server 2003 x64. Is it a good idea to do a simple upgrade on this server or is a fresh install better?
With Service pack 3 for Exchange 2007 supporting 2008 R2, is it a better idea to migrate the data from the old 2003 server to a clean 2008 server? If so does anyone have any experience of this?