I have same internal and external domain name (ex: www.mycompany.com)and
our web site is hosted externally. I have www host record in the forwardward lookup zone pointing to the ip address of the web site allowing the internal users to have access to our web site. However, we have just added a sub domain (work.mycompany.com) for the internal users at the same web host but we are not able to access it from inside our network.
I don't know too much about DNS configuration, any help will be greatly appreciated.