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  • New Frontend Server Redirecting OWA

    I used the article with the title of RPC over HTTP/S on Exchange 2003 (single server scenario) with great success... We've out grown this single server and have added a back-end server to this scenario. RPC over HTTP/S and ActiveSync connect without issue to a mailbox on the second back-end server but OWA only works from within the LAN outside of our network does not. The reason I discovered is that the front-end redirects to the back-ends owa instance (a private name space URL) when I would have expected it to proxy the connection as it does with ActiveSync and RPC-HTTP/S connections.

    What can I do to resolve this pesky little problem?

    Thanks in advance.

    David
    Last edited by Sembee; 11th April 2008, 12:04. Reason: Adjusting question title

  • #2
    Re: RPC over HTTP/S on Exchange 2003 (single server scenario)?

    If OWA is redirecting then you don't have the frontend server configured correctly. You need to ensure that it is set as a frontend server and you have no redirection ticks being carried out on the backend server.

    I am going to change the subject of the question, as it has no relation to the actual topic.

    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: New Frontend Server Redirecting OWA

      When I tried to check "This is a Front-End server" check box on the general tab for this server. I got the message "This server cannot be a FE server because it is already an RPC-HTTP BE server." The article here is the method I used to create the single FE/BE server. I would like to just add a BE server to this configuration if possible.

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      • #4
        Re: New Frontend Server Redirecting OWA

        If you have gone from a single server to a frontend/backend server scenario you need to reset the RPC over HTTPS settings. I usually suggest that the setting is changed to "not part of the RPC-HTTP configuration". After setting that, you can then make the server a frontend.

        However I am concerned that you are not using the right terminology, as it isn't clear exactly what you have done.

        If you have outgrown a single server, but want a single point of entry for further mailbox servers then you need at least three servers

        2 x backend servers that hold mailboxes.
        1 x frontend server that does not hold any mailboxes.

        If you have just introduced a second backend server to hold more mailboxes (ie not a replacement for the first server) then you either need to purchase another server to run as a frontend server or the new server needs a unique URL, SSL certificate and IP address. Users will also need to know which server their mailbox is on as automatic redirection tot he correct server only redirects to the server's real name, which may not be the same name that you are using publicly.

        When a client wants to introduce a second mailbox server I usually tell them that they need to budge for a third server to act as a frontend. The deployment is complex otherwise.

        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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        • #5
          Re: New Frontend Server Redirecting OWA

          Sorry for any confusion, but you seem to be understanding my situation precisely. I thought you might suggest a dedicated FE server so I have been busy today putting up this dedicated FE server, which is online and functioning.

          I now have
          (1) the original FE/BE server described in the article
          (2) a dedicated BE server
          (3) a dedicated FE server
          I have mailboxes on 1 and 2. Via the dedicated FE server (3) I can access mailboxes on both 1 and 2 using RPC-HTTP and ActiveSync. Using OWA I can only successfully access mailboxes on 2. When I try to connect to a mailbox on 1 the page begins to load but never finished. "loading" is displayed in the right pain . I'm sure I have to do something to the original server (1) but I don't know what.

          David
          Last edited by dmaron9909; 12th April 2008, 00:03. Reason: add image

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          • #6
            Re: New Frontend Server Redirecting OWA

            There is no such thing as a fe/be server. Servers are either backends or frontends. Backends can do everything, frontends cannot hold mailboxes.

            The most common cause of OWA not loading is a version mismatch. The rule of thumb with a frontend server is that the version should be the same or higher than the backend server. If the backend server is higher then things break.

            Ensure that the frontend serer is fully patched - that is more than just service pack, but incremental updates as well.

            The quickest way to check is to look at the version numbers in \exchsrvr\exchweb:


            C:\Exchsrvr\exchweb>dir
            Volume in drive C is System
            Volume Serial Number is XXXX-XXXX

            Directory of C:\Exchsrvr\exchweb

            06/12/2006 14:37 <DIR> .
            06/12/2006 14:37 <DIR> ..
            10/02/2006 11:48 <DIR> 6.5.6944.0
            10/02/2006 12:10 <DIR> 6.5.7638.1
            09/06/2006 10:30 <DIR> 6.5.7651.25
            26/10/2006 16:52 <DIR> 6.5.7651.43
            06/12/2006 14:38 <DIR> 6.5.7651.60
            29/04/2006 19:13 <DIR> 6.5.7651.9
            10/04/2007 13:58 <DIR> bin
            10/04/2007 13:58 <DIR> controls
            10/02/2006 11:48 <DIR> help
            10/04/2007 13:58 <DIR> img
            13/07/2006 20:23 <DIR> themes
            10/02/2006 11:51 <DIR> views
            0 File(s) 0 bytes
            14 Dir(s) 12,351,254,528 bytes free

            C:\Exchsrvr\exchweb>

            Note that the highest version is 6.5.7651.60. That is taken from my fully patched Exchange 2003 system.

            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.

            Comment


            • #7
              Re: New Frontend Server Redirecting OWA

              Simon,

              Thanks for all your help. Everything is working as it should.

              David

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