My client has one windows 2003 domain that spans different countries. I have all AD sites configured well and replication is going as expected. Client IT staff from Germany site noticed that a number of client machines do not talk straight with the domain controllers in Germany AD site. They rather communicate with other DC's from different sites. If the machines are connected on the same subnet where the DC is on then computers can talk to the local DC first, but if they are on different subnets they just go out to other AD sites and find another DC to communicate with especially when you do nslookup for domain name. At the beginning I use to have a super subnet that covers all small subnets in the site, but lately I created all Germany subnets in AD and I associated these subnets with Germany AD site so that all machines from that site can communicate with the local DC's first.
I just found out that the issue still the same. Just to clarify, the machines are pointing to the local DNS servers in Germany. There is no WINS. Do you think I need WINS to help in this matter? Does anyone know what I'm missing here?