multiple individual domain single exchagne server for multiple doamins RRS feed

  • Question

  • Hi guys

    My company have domain controller and exchange 2007 more than hundred users are there. (

    Now my company acquired another two companies those companies have their own domain controller, both domain have fifty users ( and

    My manger saying that provide email address to all users of other two domains ( and he is telling that we are not going to spent single penny over their use our current infrastructure.

    Now my plan is use my current exchange server. How can I  provide email address for this two companies email address from my exchange server (this server registered in domain.)

    Both company users email should be like this and

    Anybody can help on this issue.




    Tuesday, February 12, 2013 2:34 PM


  • Hello,

    You are better off asking this question in the Exchange forums.  That said, the basic steps you will need to take are:

    1.  Establish forest trust relationships between your domain, and each of the acquired companies' forests and (

    2.  On your Exchange server, set and as authoritative accepted domains. (

    3.  Change the MX records for domains and to point to your exchange organization via whatever mail gateway you use.

    4.  Migrate user mailboxes in and from their current solutions to your exchange server. (

    5.  Clean up the resources in the other domains.

    Note that transition and co-existence can be complex subjects.  Your manager may not be willing to purchase new equipment or software however you should consider some consulting.

    Tuesday, February 12, 2013 4:00 PM