[ActiveDir] an AD/DNS question

[Byrne, Steve]

I have an empty root domain called:  "domain.root" It is running Ad integrated DNS for its own domain only.   I then upgraded an NT4 domain into a new domain tree called "corp.company.com" . It is part of the forest created above. The "corp.company.com" DNS servers are all configured to forward unknown lookups to the root DNS servers. There is no problem resolving dc1.domain.root from the "corp" domain.   The problem is the other way: the DC in "domain.root" cannot resolve names in the child domain. I am wondering what the best way to sort this out is. Do I put a zone for the "corp" domain on my root DNS servers? Or set my forwarders on the root domain to forward to the child domain? I am worried that it may cause a loop....   Thanks for your help, SB