My organization has opened an office in another state. We decided to create a subdomain for all those users. We would like those users to use our exchange server for email. But to use exchange they have to have an account on the parent domain. Is there a way to for exchange to handle users on the subdomain without having to create an account for them on the parent domain. If the answer is yes then please outline the steps. We are using active directory, exchange 2003 and windows 2003 server.