2 offices with T1's (1024Kb usable bandwidth). We are using IP Cop firewalls to create a VPN between offices. The main office has most of the servers, and all of the E-Mail is initially routed through this site. All of the servers have Windows Server 2003 installed on them, and the exchange server is using Exchange 2003 Standard SP2. The remote office has a single server with Server 2003 installed on it and is also running Exchange 2003 Standard SP2. A total of 3 AD domain controllers are configured, 2 at the main office 1 at the remote office. All of the computers are organized in OUs based on its location, but I don't know if there is any configuring that needs to happen to tell the computers to look at a specific primary one or not.
Often times users at the remote site experience slowness logging in, and files stored locally sometimes will take a very long time to open. This has been noticed on several different workstations, so i don't believe its the workstations.
Is it possible the users at the remote site are connecting to the main AD server and this is causing the slowness? What's the best way to configure the system for a setup like this.