I have installed the new Exch2007 on Win 2008 Std. server in co-existance with Exch2003 on Win 2003 Std. server.
I am going to move the remaining users to Exch2007 and want to be ready to decomission Exch2003. The Win 2003 server with Exch2003 is a DC at the same time. I have another DC with Global Catalog on it and all five FSMOs on it. The Win 2003 Std. server is a DNS as well.
What are the steps to decommission the Exch2003 server now?
After that I intend to remove the Win 2003 DC and re-install it clean to make it still second DC.