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Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

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  • Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

    Hi All,

    Some users in our Vancouver branch office have reported that they are receiving mailbox size limit warnings. On checking one users mailbox in ESM, his mailbox is probably nearer half the size limit. What's odd is that the mailbox size listed in the notification message appears to be counting both local and server data.

    These users AD accounts show they are using default storage limits. Storage limits on server are also correct. Why is he receiving these messages when he is clearly within his quota limits?


    Environment details:
    Windows 2003 Standard R2
    Exch 2003 SP2

    Thanks All
    Rav

  • #2
    Re: Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

    Looking in ESM is not going to show you the size of the mailbox. ESM does not show you everything.
    Look in Outlook itself, right click on the User at the top and then choose Properties, then folder size. That will show you the true size of the mailbox.

    Unless you are using PST files there are no local and server data. Outlook in cached mode is a mirror of the mailbox on the server. If you are using PST files then those are not counted - you are mistaken there.

    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


    • #3
      Re: Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

      Thanks Simon.

      I'm confused. The folder size in Outlook shows server data as 140MB. Local data is shown as 156MB. ESM shows mailbox size as 230MB!

      Presumably, the server data tab in Outlook should display the size of the mailbox on the Exchange server?

      Regards

      Rav

      Comment


      • #4
        Re: Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

        Local data will always be bigger than the server data due to the way that OST files store the data. Nothing you can do about that.

        ESM doesn't reflect the true size of the mailbox for various reasons.

        Read the note at the end of this article for more about ESM and limits: http://support.microsoft.com/kb/828070/

        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: Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

          Thanks. Bit of a hazy area it would seem.

          Not sure what to explain to this user(s). You stated that ESM doesn't always display the true mailbox size but neither does Outlook (in this case)

          Outlook run without the cached mode option would, I assume, provide the correct mailbox size. I might suggest that to users who are questioning the validity of the folder sizes listed in Outlook.

          Is there a definitive method of ascertaining the mailbox size?

          Rav

          Comment


          • #6
            Re: Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

            Different admin, same problem.

            I have a group of users at a geographically remote site that are using cached mode to improve access times to their email. Users are starting to receive the warning about exceeding the mailbox size limits. User mailboxes are significantly under the warning threshold, let alone the prohibit send threshold. Cached mode OST files are also smaller than the thresholds. Put together they don't make up half of the limit.

            Example:
            User mailbox size in ESM: 6.4M
            User cached-mode OST: 7.2M
            Warning threshold: 40M
            (Size reported by Outlook: Also 6.4M, just in case someone asks)


            The problem is affecting multiple users, all at the remote site. They're storing their cached mode OSTs on a shared network drive with plenty of free space (77G).

            No resolution yet. Just letting you know you aren't alone.
            Also, while the link to the Microsoft Knowledge Base was appreciated, an article about the maximum size limits of EDB files doesn't apply to this problem.

            Comment


            • #7
              Re: Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

              The link to the article was for this little bit:

              "When you put a limit on a mailbox, you only limit the storage in the Priv.edb file. You do not limit the storage in the Priv.stm file. For example, a mailbox may appear to use only 250 MB of space in Exchange System Manager, but the total space that the mailbox uses may be 450 MB. This difference occurs because the 200 MB of space that the Priv.stm file uses does not appear in Exchange System Manager."

              OST on a network share? What is the point in that? Never mind that isn't a supported configuration. The whole point of OST is to have the file locally, not stored on a network share. All you have done is move the data from being pulled directly from the Exchange to being pulled from a file server.

              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: Mailbox Size limit NOT exceeded yet users are receiving size limit warnings

                Thanks for sharing kernbm.

                Does anyone know if this anomaly has been cleared up in Exchange 2007?

                Comment

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