Exchange 2003 in a Windows NT Domain??

Discussion in 'Server Migration' started by PaulW, Jul 13, 2004.

  1. PaulW

    PaulW Guest

    I have a network comprised of several NT 4.0 servers with
    Exchange 5.5. Because I'm out of space for E-Mail, I
    would like to install Windows 2003 with Exchange 2003 and
    connect it to my existing network as a first step in a
    migration to 2003. Can I have Active directory and
    exchange on a Windows 2003 server on an NT network if it
    isn't the PDC?
    PaulW, Jul 13, 2004
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  2. No. If you install Windows 2003 and Active Directory and Exchange 2k3 it
    will be a completely seperate domain and not know anything about your
    current NT4 domain. You could setup trusts between these two domains and
    make some things work that way. Exchange2k/2k3 needs Active Directory in
    order to work and the only way to keep your current domain intact would be
    to upgrade your current NT4 PDC to Windows 2k3 and this will create the
    Active Directory based upon your current domain. You would then need to
    install Exchange 2k3 into your Exchange 5.5 site using the Active Directory
    Connector to get the 5.5 info into AD and make the E2k3 talk to 5.5. This is
    not an easy process to jump into and you'll need to read some papers at Obviously this is just a quick note on
    the process and there is much more to it than what I mention.
    Scott Harding - MS MVP, Jul 13, 2004
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  3. Hi Paul,

    Thanks for your posting here.

    I think you first need to consider that if you will keep the original
    domain name or migrate to another domain with different name.

    If you prefer to upgrade NT domain to Windows 2003 domain, you can add
    anther BDC and promote it to be PDC, then upgrade to Windows 2003. At this
    time, the original PDC will became a BDC and Exchange 5.5 also works on it.

    Exchange Server 2003 can only be installed on Windows Server 2003 or
    Windows 2000 Server SP3 and later. You can use Exchange Migration Wizard to
    move the mailbox from the Exchange 5.5 to the Exchange 2003.

    For your reference, I have included the following information which may be
    useful to you:

    HOW TO: Upgrade a Windows NT 4.0-Based PDC to a Windows Server 2003

    Upgrading from Windows NT Server 4.0 to Windows Server 2003

    Windows NT Server 4.0 Upgrade Guide

    821829 Moving Mailboxes in Exchange Server 2003

    If you have any more concern about Exchange migration, I would like to
    suggest that you submit a new post in our Exchange news groups:

    The above newsgroups are dedicated for discussing Exchange issues and I
    believe that you will get more specific and detailed suggestions there.

    Have a nice day!

    Bob Qin
    Product Support Services
    Microsoft Corporation

    Get Secure! -

    When responding to posts, please "Reply to Group" via your newsreader so
    that others may learn and benefit from your issue.
    This posting is provided "AS IS" with no warranties, and confers no rights.
    Bob Qin [MSFT], Jul 14, 2004
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