Host Multiple SMTP Domains using Exchange 2007

Posted on 2009-12-16
Last Modified: 2013-11-30

For the longest time, we operated a relatively simple Windows AD single-domain environment.  We have recently partnered with an external organization to acquire a large contract, splitting the workload between teams.  As a result, I'm receiving a few specialized requests.

Messaging Environment:  Exchange Server 2007 (DMZ-based Edge Server (1 role on 1 box), LAN-based Hub, Client Access, Mailbox and UM server (4 roles on 1 box))

Task:  find a way to send and receive email that is from the new domain name established between my organization and the partner, call it ''.  A handful of internal employees within my company need to send and receive emails from  To make things interesting, another handful of folks at (potentially) several external organizations need to receive and send mail using as well.  Of course, both internal and external folks will work mainly from their longstanding, already-existing email accounts (  I need to find a way to add this new functionality for the use of both teams, internal and external.  I've been asked to achieve this using our resources for both that possible?

Thanks in advance-
Question by:mattguil
    1 Comment
    LVL 74

    Accepted Solution

    OK, firstly it's only really going to work if the mailboxes are hosted on a single server, because otherwise you will have difficulty distributing the different messages to the different servers.

    Then all you need to do is in Exchange Management Console under Organisation Configuration > Hub Transport > Accepted domains add the domain you wish to accept.

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