Dear Experts, We are running a Domain Controller/Global Catalog on Windows Server 2003 (SP2) and Exchange Server 2003 (SP2) on a Windows Server 2003 (SP2). We have two subnets in our Network, 192.168.0.X and 192.168.6.x. When the users (all running Windows XP SP2) from the subnet 192.168.6.x tries...