I am planing to upgrade from exchange server 2003 to exchange server 2010. I understand 2010 can co-exisist with 2003, but my 2003 organization must be in NATIVE MODE, not a problem because i don't have anymore MS Server 2000 domain controllers, they were decommisioned a few moths after we moved to AD. However my Front-End exchange server that sits on my DMZ is running Exchange server 2003 on Windows 2000 Server.
Can i change my Exchange 2003 organization to NATIVE MODE if my Front-End Exchange server is on the Windows 2000 Server OS? If not, will i have to setup a new Front-End Exchange server on at least Windows Server 2003 to replace the 2000 server setup?
It's been a very long time since these servers were configured so i may need help setting up a new Front-End server if it will be required.
thanks
B
Bobby