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Strange OWA issue with Exchange 2003

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  • Strange OWA issue with Exchange 2003

    Hello everybody,

    I have Exchange Server 2003 SP2 running on an Server 2003 box which is a member server of another server 2003.

    Since today, i m facing a strange issue, while logging into the OWA of the exchange server from my client machines internally. The user name and password authentication fails and the dialog box keeps on appearing, whereas if i login from the same machine through my external access address or registered domain name, the user authentication is accepted. Thereafter whenever i try to open the owa using local ip address, it opens without authentication. At the end of the day, i was able to find out, i was able to open all the users mailsbox internally without the user authentication. On the server it asks for the authentication, whereas in the client pc's, it doesn't asks for any.

    Whereas in Outlook Mobile Access, it asks for authentication.

    It is a serious security breach for my network.

    Can you anyone pour me with solutions.

    Thanks in millions.

    Ahmed

  • #2
    Re: Strange OWA issue with Exchange 2003

    So what changed?
    This doesn't happen overnight unless some has changed something. Access to all mailboxes is not expected. It would either appear something is wrong with authentication or users have been added to a group that they shouldn't have been. You need to find out how the permissions have been granted. Look for what users/groups have Send As/Receive or Full Mailbox Access.

    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: Strange OWA issue with Exchange 2003

      Thank you simon for stepping up.
      I checked on the Mail box level, apart from Administrator and Domain Admin groups none others are given the Send As/Recive or Full Mailbox Access. Even I feel the same reason of rights could be the reason. But nowhere explicitly it is found.

      Ahmed

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      • #4
        Re: Strange OWA issue with Exchange 2003

        The permissions have to be granted somewhere - you cannot have access unless you have permissions to do so. There are very few places where the permission can be set. Ensure that users haven't been added to another group that they shouldn't have been. I have heard of references to a permission that can only be seen in adsiedit.msc, but haven't seen that myself and cannot find anything from Microsoft on it.

        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


        • #5
          Re: Strange OWA issue with Exchange 2003

          You are absolutely right. You hit the target on the right spot. I m still trying to figure it out.

          I found an another way to explain the scenario.

          The Exchange Server is a member server of domain which is the DNS server too. The authentication is refused when i use the server name and pass through this server only. Whereas if the IP address of the exchange is used to access. The server accepts the authentication.

          Now I m confused, whether to look on the rights of the mail box level of the exchange server else on the Domain controller. I feel something has gone wrong on the Domain Server level and not on the Exchange server level.

          Thanks in millions in being with me on this thread and flowing your valuable suggestions.
          Have a nice day.

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