Here is my scenario - My company uses domain 123.com and can send and receive email through that domain. We've added a second domain called XYZ.com. I've configured exchange to allow receipt of messages sent to XYZ.com. However, they want users who receive an email through XYZ.com to be able to reply using the newly created XYZ.com address while still being able to send and receive emails using 123.com, so there will be a clear separation between domain names in communication with customers. Is it possible in Entourage to have a user who has been configured for 123.com email on the exchange server, to be able to send out email as XYZ.com through the same exchange server without having to switch identities or create a second user account entirely? I can clarify as much on the configuration if needed. My apologies if this question sounds a little confusing.