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  • ActiveSync with Exchange on custom port number?

    My ISP blocks all ports below 1024 so I had to setup my SBS2003 Exchange server to run on port 9998 (HTTP) & 9999 (HTTPS), which works perfectly (tested locally & on remote locations).

    When I add the correct secure portnumber to the server address (ActiveSync > Tools > Configure Server Source), ActiveSync 4.2 cannot find our Exchange Server. I get error 0x80072EE7. When I remove the portnumber everything works fine as long as I'm on my local network.

    I enter it like this: exchangeserverdomain.com:9999 (tried 9998 as well).

    I have OWA running perfectly by using the same external server address:<port>, and all needed certificates are on my WM5 device.

    Seems like ActiveSync doesn't like portnumbers.

    Any tips?

  • #2
    Re: ActiveSync with Exchange on custom port number?

    Yes. Replace your ISP.



    I'm not sure you can change Activesync's port. I can check.
    Cheers,

    Daniel Petri
    Microsoft Most Valuable Professional - Active Directory Directory Services
    MCSA/E, MCTS, MCITP, MCT

    Comment


    • #3
      Re: ActiveSync with Exchange on custom port number?

      Originally posted by danielp
      Yes. Replace your ISP.
      Too bad, but I don't have that option, that was also my first choice

      Comment


      • #4
        Re: ActiveSync with Exchange on custom port number?

        If you dont have an option to change the ISP then you have two options:

        1. Take a lawer and sue the ISP.

        2. Live with it.

        * Guess what will happen if your ISP will block TCP 80 port


        Regards,

        Yuval
        Best Regards,

        Yuval Sinay

        LinkedIn: https://www.linkedin.com/in/yuval14, Blog: http://blogs.microsoft.co.il/blogs/yuval14

        Comment


        • #5
          Re: ActiveSync with Exchange on custom port number?

          I bet the ISP has another type of service where you can run servers and wants a lot of money for it. That blocking of all ports below 1024 sounds like a crude but effective way to block all types of servers from being hosted on their network - unless the user has massive inconvenience to themselves - like using alternative ports.

          Exchange ActiveSync makes internal calls on the default web site on port 80 - which cannot be changed. Therefore if you have changed the ports on the web site, that will break things. That is also the reason why you cannot have the "require ssl" option turned on for OWA when you want to use handhelds.

          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


          • #6
            Re: ActiveSync with Exchange on custom port number?

            Too bad, the only other option my ISP provides is a fixed IP option, but still while port 80 being blocked, cause they do not want any default http access to our servers.

            It's pretty stupid that I can use custom ports for Outlook Web Access, but once you want to connect with a device (I use a Qtek9100), initial communication will have to go over port 80.

            Comment


            • #7
              Re: ActiveSync with Exchange on custom port number?

              Mobile access can go over port 443. Do they block https traffic as well?
              I run my sites with just port 25 and 443 open, nothing else and handhelds work fine.

              The internal calls are on port 80, those don't go out to the internet, so a block on port 80 doesn't affect them.

              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: ActiveSync with Exchange on custom port number?

                Originally posted by Sembee
                That is also the reason why you cannot have the "require ssl" option turned on for OWA when you want to use handhelds.

                Simon.
                Well... you can get away from this limitation by creating additional virtual directory that will be used only by OMA/ActiveSync as per KB:
                http://support.microsoft.com/kb/817379/en-us (see method 2)
                Guy Teverovsky
                "Smith & Wesson - the original point and click interface"

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