When we originally went to our 2000/2003 AD domain we had 1 DC that had all the FSMO roles. I have since then transferred all the roles to another server. I want to down the original server long enough to convert it to a virtual server but when I down it all of our user's outlook email clients lock up. Is there a reason that they are only looking at our 1 DC and not the others? I thought that AD was supposed to be redundant so that 1 down server can't take out the network? Any ideas on this would be very helpful. The original server is Windows Server 2003.