I have Dr offices that have a layer 3 connection to my main internal network, but also have a connection to the internet via ISP connections I do not control. I have put routers between thier network, and mine. DNS has been an issue for the nodes in the Dr offices. Can spilt-dns be configured to forward queries to my internal DNS when the query is for one of my internal server, and also then forward the query out to their ISP DNS service for all other queries?
I have this problem too.