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Exchange 2010 and 2003 co-exist

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  • Exchange 2010 and 2003 co-exist

    We currently have a 2003 exchange front end server and exchange 2003 back end servers.

    Does anyone know if we can or what are the pitfalls in adding an Exchange 2010 server behind the 2003 Front end and moving the mailboxes from the 2003 BE serves to the 2010 servers.

    Thanks for any help in advance

  • #2
    Re: Exchange 2010 and 2003 co-exist

    You can't have Exchange 2003 frontend servers for Exchange 2010 mailboxes.

    All users will need to be directed to the Exchange 2010 CAS server. Then the Exhcange 2003 server must be exposed to the internet with its own unique URL, SSL certificate and IP address. Exchange 2010 will then redirect the Exchange 2003 users to OWA.

    Once that is setup, moving the mailboxes isn't an issue because everyone will be using the Exchange 2010 URL.

    Simon.
    --
    Simon Butler
    Exchange MVP

    Blog: http://blog.sembee.co.uk/
    More Exchange Content: http://exchange.sembee.info/
    Exchange Resources List: http://exbpa.com/
    In the UK? Hire me: http://www.sembee.co.uk/

    Sembee is a registered trademark, used here with permission.

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    • #3
      Re: Exchange 2010 and 2003 co-exist

      Indeed, just direct all users to the 2010 server. Enable forms authentication on both servers. Configure the redirection to the 2003 by using the cmdlet. This way users will sign-on to the 2010 server, and if their mailbox is still on the 2003 server be redirected without the need to login twice.
      gerth

      MCITP sa, ea & va, [email protected]

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      • #4
        Re: Exchange 2010 and 2003 co-exist

        Thanks for the replies:-

        Is having a seperate 2010 CAS server worthwhile and can it be run alongside the 2003 FE server while we get it all up and running.

        It is planned to only have one 2010 Back end server but are there good reasons to have more than one.

        Is there a standard cmdlet somewhere that will do the redirecting to the 2003 exchange servers.

        If I don't move the mailboxes what is best procedure to move the data between old 2003 and new 2010 and create necesassary mailboxes.

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        • #5
          Re: Exchange 2010 and 2003 co-exist

          Based the information you have supplied, it is impossible to answer your questions.
          It can be a good idea to have multiple CAS, as it can be to have multiple mailbox servers. Unfortunately you haven't provided enough information to say whether that is the case, because there is no one answer fits all solution.

          If you are installing Exchange 2010 in to the same domain, why would you want to move mailboxes in any other way than Move Mailbox wizard?

          The legacy redirection information is all documented on Technet and the Microsoft Exchange Team blog.

          Simon.
          --
          Simon Butler
          Exchange MVP

          Blog: http://blog.sembee.co.uk/
          More Exchange Content: http://exchange.sembee.info/
          Exchange Resources List: http://exbpa.com/
          In the UK? Hire me: http://www.sembee.co.uk/

          Sembee is a registered trademark, used here with permission.

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          • #6
            Re: Exchange 2010 and 2003 co-exist

            hi

            Ok just to recap we are trying to replace 3 exchange 2003 be and 1 exchange 2003 fe servers with a 2010 exchange setup.

            initially I understand 2010 exchange would not sit behind a 2003 fe server.

            So is my next step to create CAS server to run alongsiide the 2003 fe server.
            If so it was suggested I needed a cmdlet to direct mail to the 2003 servers for them to coexist. then my question is - is there a standard cmdlet to do this.

            I assume if I do this I can then move the mailboxes with the wizard.

            If there is some documentation outling this scenario do you have a link please - although i am intersted to hear peoples feedback of this move and if any pro's and cons.

            my querey regarding whether we should have more than one exchange 2010 server - was a quetsion of what people have found best in practice - my though was it would share the load and make the system more resilient.

            What have other people found to be the benefits or such a setup and what was good pracice.

            Thanks for any advice.

            Comment


            • #7
              Re: Exchange 2010 and 2003 co-exist

              Have a look at this information, I think the most of what you want to know is there:
              http://msexchangeteam.com/archive/20...02/453367.aspx.

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