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  • OMA Problem

    Hi

    Setup - Single Exchange box attached to NAS, two NICs, one on 10.0 to Nas
    2nd on 192.168 to network. Exchange 2003 \ SP2


    Everything works fine, SSL OWA, SSL activesync for windows mobile devices (Registry and virtual Exchange dir setup for this as instructed by MS KB 817379).

    We've got two OWA sites, both on purchased SSL certifications

    Everything is working fine apart from OMA and activesync for the iPhone. The iphone just can't find the server. Got a feeling the iPhone issue is related to the OMA not working.

    OMA in IE returns error


    A System error has occurred while processing your request. Please
    try again. If the problem persists, contact your administrator.


    Event log on server says -


    Description:
    An unknown error occurred while processing the current request:
    Message: The remote server returned an error: (400) Bad Request.
    Source: Microsoft.Exchange.OMA.ExchangeDataProvider
    The exchange DBs are are on an attached NAS box, assume this makses no
    difference?


    Please help! Thank you

  • #2
    Re: OMA Problem

    If OMA is not working on the server its not going to work on the iPhone. Fix the error with OMA first. Browse to http://servername/oma and see what error is returned or if the URL even resolves. If the client is using iPhone v2 then just use active sync and then you dont need to bother with a WAP browser at all. Plus they get full active sync functionality as opposed to the basic WAP interface.

    Comment


    • #3
      Re: OMA Problem

      As far as I am aware, the iPhone uses Exchange ActiveSync, the same thing as the Windows Mobile devices use. Therefore OMA not working wouldn't matter.

      While OMA and ActiveSync are similar, they aren't quite the same. In many cases if OMA isn't working then neither will ActiveSync. However you have said that ActiveSync works on Windows Mobile devices.

      This would tend to point to an issue with the iPhone more than anything else.

      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


      • #4
        Re: OMA Problem

        Version 2 of the Iphone now uses active sync. Prior to that the only option to recieve mail from exchange was via IMAP. This naturally is dependant on what software the client is using.

        Comment


        • #5
          Re: OMA Problem

          Hi ITLondon,

          I am having the exact same problem, even after following KB817379.. please take a look at my thread:
          http://forums.petri.com/showthread.php?t=26106

          Thanks!

          Comment


          • #6
            Re: OMA Problem

            Hi All,

            Thanks for your replies.

            OK if I don't need OMA for iPhone, i won't bother with it at this stage. Imapi works fine for the iPhone, but users now want to use Activesync which works fine for windows mobile devices 5 and 6. When users try and connect on the iPhone 2 using the OWA SSL web address (the same one used for WM dvicies, SSL based), it just can't connect to the server.

            Read somewhere, (can't find that link now), but they were saying you should be able to connect via telnet to port 443 for the iphone to work, is this correct?

            Thanks Sivnay23, i'll have a look

            Thanks all,
            Last edited by ITLondon; 28th July 2008, 19:32.

            Comment


            • #7
              Re: OMA Problem

              If ActiveSync works for Windows Mobile devices then it should work for the iPhone. The problem is not with the server. The only thing I can think would be the problem is SSL certificate acceptance.
              However you should be able to browse to OWA from the device. If that doesn't work then something is wrong with the name resolution.

              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


              • #8
                Re: OMA Problem

                They can browse to the OWA website fine. Do you know if certain types of certificates won't work with certain devices?

                Thanks!

                Comment


                • #9
                  Re: OMA Problem

                  Hi

                  update - I've had to get the SSL certificate reissued under Entrust root which is compatible with mobile devices.

                  Hopefully this will fix the issue with the iPhone. Will keep you posted

                  thanks - any input much appreciated!

                  Comment


                  • #10
                    Re: OMA Problem

                    Hi,

                    The OMA problem was fixed by adding a host header on the default website with the NETBIOS name of the server pointing all IP addresses.

                    thanks

                    Comment

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