We have developers that are on a domain and exchange server in another country. Currently we have their addresses within our domain here and they have accounts on a (separate)domain and Exchange server there. These developers have no internet access for security purposes. Current they have written a program that when we send to a certain single address, the sender puts the username$ in the subject line and the program on the other side, routes mail to the user internally there.
What I'm trying to find out is there a better way to make Exchange do this securely within the local domain or is it available within Exchange?