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  • Exchange 2003 plus two domain controllers

    we have 3 servers. two of them act as DC's (DC1, DC2) and the third as Exchange 2003 sp1.

    the problem is: when i shutdown DC1, users cannot send or receive emails.

    I suspect that i did not installed DC2 correctly.

    the installation was as follow.

    DC1 installed, than exchange 2003 was installed. at that point everything worked great.

    then i installed DC2. (dns, dhcp, dcpromo)

    at this point too everything works fine!

    but when DC1 goes down Outlook status at users desktop become unable to connect?

    Thanks

  • #2
    Re: Exchange 2003 plus two domain controllers

    sounds like global catalog issue...
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    • #3
      Re: Exchange 2003 plus two domain controllers

      should i reinstall exchange as

      a) Setup /forestprep
      b) Setup /domainprep
      c) Finally setup reinstall

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      • #4
        Re: Exchange 2003 plus two domain controllers

        nope, just nominate another global catalog.....

        http://www.computerperformance.co.uk...al_catalog.htm
        Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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        • #5
          Re: Exchange 2003 plus two domain controllers

          Thank you! for the link too

          Since i must go out i will fix it later and will update you

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          • #6
            Re: Exchange 2003 plus two domain controllers

            Couple of things here.

            1. Exchange will only talk to a global catalog. Therefore if both domain controllers are not global catalogs, then Exchange will not use them.
            2. Exchange will only talk to ONE global catalog at a time. Furthermore, if that GC goes away, it doesn't go looking for another one for some time. Microsoft claim that is less than 10 minutes, in practise it can be as long as 35 minutes.

            Therefore the behaviour you are seeing is what I would expect.

            Of course the question is why you are shutting down a domain controller, particularly during the day? I only restart DCs for patching and that is done out of hours, and if I have to shut them down for any reason then I have a procedure that ensures complete continuity.

            And any reason you are still only Exchange 2003 SP1, when SP2 has been out for almost five years? If it is because of the "isn't broken, so not fixing it" then that doesn't really apply with the IT world. If that server is exposed to the Internet in any way, then it needs to be patched, otherwise you become a target.

            Simon.
            --
            Simon Butler
            Exchange MVP

            Blog: http://blog.sembee.co.uk/
            More Exchange Content: http://exchange.sembee.info/
            Exchange Resources List: http://exbpa.com/
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            Sembee is a registered trademark, used here with permission.

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