I am very new to Microsoft Products and have been tasked with getting Exchange 2007 to work, never used MS for anything. I have 1 server (Exchange 2007 Standard, 2003 Ent R2) and 2 DCs(2003 Server Standard). Have Exchange running and it seems to work fine on the main domain I installed under. I have added 3 domains. I added the new domains under the Org Config, Hub Transport, accepted domain and address policies.
My problem is some of the users have the same email address prefix (before the @ sign) but different domains. I am having a heck of a time getting the "new mailbox..." to allow me to assign names and Aliases to any domain except the last one I added. In fact, on the "new mailbox" form it will only allow me to assign to the root domain.
I tried adding groups to the DC and changed the Recipient Scope to "view all in forest" but nothing allows me to choose anything other than the root domain.
Thanks for any help