Need help with a DNS entry for trust relationship through conditional forwarder. They need to use external IP, we need the internal IP.

In our corporate domain we have a forward lookup zone created called companyusa.com (AD domain is company.corp.tld). In there we have a DNS entry for a server that hosts a website and FTP. We currently have that host configured with the internal IP address. External to the domain use the external IP address registered in godaddy DNS.

Here is the problem. We have a sister company we have a domain trust with. In their DNS they have a conditional forwarder set up for companyusa.com that resides on our name servers. Currently when they try to hit the http or ftp on that host it resolves the internal IP address (from the conditional forwarder). We do not want to change it for all users, just users of that site. What is the best way to do this and not break their conditional forwarder or break it for our internal users?

Have them create a new forward lookup zone on their end called host.companyusa.com with an a record with no hostname but just an IP? Would adding this forward lookup zone keep the functionality of their conditional forwarder in tact for companyusa.com?
Don HarveyAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

DrDave242Commented:
Does the other company need that companyusa.com conditional forwarder at all? From your description, they need the company.corp.tld conditional forwarder for the trust, but since they need to resolve those companyusa.com hosts to their public IPs, won't they be better off just using the authoritative public DNS servers for that?
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
DrDave242Commented:
No response from asker, but removing the conditional forwarder for the public domain name will allow machines on the other end of the trust to resolve those names correctly.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Server 2012

From novice to tech pro — start learning today.