Exchange 03 hosting two domains need to pull one off to a new exchange 07

Posted on 2007-10-15
Last Modified: 2010-03-06
I have a 2003 standard server running 2003 Exchange server.  The server is hosting two domains and  I need to add an additional exchange server to handle, and leave the existing exchange server for  The new exchange server will be Exchange 2007.  Splitting these apart would be redirecting the MX records for to an additional public IP that we have and forwarding that traffic to the new server which will be handling  

Any suggestions and help on this would be appreciated.
Question by:mpage
    LVL 58

    Accepted Solution

    It depends on how you install your second Exchange server. Since you already have Exchange configured, I would assume you would install the Ex2007 machine into the same Exchange organization for ease of moving domain1 mailboxes across. If so, then there is no need to change any MX records or get a second IP, since mail will just arrive at the current Exchange server and Exchange will pass it over the LAN to the Ex2007 machine when it detects the recipient's mailbox (for domain1) is on that machine.

    However, if you intend on running two separate Exchange organizations or permanently splitting up the two domains Exchange servers so they act separately, then you will need to split the MX records up or set up some sort of routing between the environments if you keep the same MX records. In this case, in would be much easier to simply change the MX records to point to a second IP which goes through to your Ex2007 server.


    Author Comment

    Do you know of any material that I might read to preform this move?
    LVL 58

    Expert Comment

    Well, the Exchange 2007 installation is easy and provided you have the new server in the same domain it should pick up your existing organization just fine. Make sure you install into the existing organization, not a new organization, and you won't have a problem.

    Once it's installed, you'll need to just wait a little while as things settle, then you can start the process of moving mailboxes across. Here's an explanation on doing that:

    Provided there is always contact between the two servers, you could if you like still set up two MX records pointing to two external IPs. In this scenario, you have a simple load-balancing going on, since incoming mail will go to both Ex2003 and 2007. Exchange will then work out which server the mail needs to go to in order to be delivered and either deliver it or transfer to the other server across the LAN accordingly. This is done automatically with no intervention on your part. Your MX records if you did do this I would recommend having them both the same cost, although you could have one server with a higher preference than the other if you wish.


    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Why spend so long doing email signature updates?

    Do you spend loads of your time carrying out email signature updates? Not very interesting are they? Don’t let signature updates get you down. Let Exclaimer Cloud - Signatures for Office 365 make managing email signatures a breeze.

    Use these top 10 tips to master the art of email signature design. Create an email signature design that will easily wow recipients, promote your brand and highlight your professionalism.
    To show how to create a transport rule in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Rules tab.:  To cr…
    To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

    760 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    12 Experts available now in Live!

    Get 1:1 Help Now