A few questions that came through my inbox included how resources from domain A can access resources in domain B in conjunction with using Revit Server. Additionally, when you install Revit 2012 (Architecture, Structure, or MEP), you also have the option of specifying the name of your Revit Server to connect your Revit instance. If you’re on the same domain, your DNS will take care of name resolution to your domains. Trouble starts when you’re working with RS environments between different domains since server1 from domain A can’t talk to server2 from domain B since it doesn’t know it’s IP. To fix it, you will need to configure conditional forwarders.
This from the DNS snap-in from the Windows 2008 R2 server, and from there, you have a few options:
You just place the DNS domain name in the top section and the IP address of the DNS server that is authoritative for that domain below. Storing the conditional forwarder in AD is not default, but recommended (check box). You can also specify the amount of time the DNS server will wait before it times out (default is 5 seconds). If you’re going between different domains in different countries / continents, I would increase the time out period.
This will allow different domains to establish connection between users -> local Revit Server -> Central Revit Server. Hope it helps you guys configuring and expanding RS! If you have trouble, feel free to drop a comment!