our internal dns is handled on a Netware 6.5.5 server and the zone is domain.com.

We have added an international site to our network which has the domain of domain.com.xx (xx=country code).

The international site's Internet connection has been disconnected and they now get Internet through us. The sticky part comes with the fact that they have AD and Exchange and we have neither. We have set up the firewall connection for SMTP traffic destined for mail.domain.com.xx to get to their exchange server and have made the necessary domain registration changes. However, internal DNS is the next hurdle. How should I define the new zone to allow email from our Groupwise GWIA to communicate with their Exchange (and vice versa) INSIDE our firewall until we can migrate them over to GroupWise?