We have our root domain, domain.com which is where our Exchange

organization is hosted. We have now child domain which we would like to handle internal only email for.



The requirement is for the child domain to be able to send emails to each other but NOT to the internet or the parent domain.



Is this possible to do with E2K7?



Transport rules can stop the users mailing out of the organization but we want to stop them mailing to the parent domain. We would also like to stop them seeing the parent domain GAL. Is this possible or are we asking too much?

Software/Hardware used:
Exchange 2007 SP1, Windows Server 2008