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Possible Greylisting Bug?

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  • Possible Greylisting Bug?

    Your message did not reach some or all of the intended recipients.
    Subject: *****
    Sent: 16/10/2008 12:33
    The following recipient(s) could not be reached:
    [email protected] on 25/10/2008 03:34
    Could not deliver the message in the time limit specified. Please retry or contact your administrator.
    <mailgate.co.uk #4.4.7>

    My client received the above error. They are using SBS 2003 SP2 for Exchange. The email was definitely transferred out on checking the logs.For some reason it was submitted again 9 days later. Is this possibly related to the greylisting bug in SBS 2003?
    Attached Files

  • #2
    Re: Possible Grelisting Bug?

    The greylisting bug means email messages reappear when the server or SMTP Server Service is restarted. If the reappearance of the message coincides with either of those events then it would tend to indicate the greylisting bug.
    There is a patch available from Microsoft for the bug.

    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: Possible Grelisting Bug?

      I have already enabled the registry fix for the "bug". The reason for my query was the NDR`s normally indicate something along the lines of greylisting in the text of the NDR. In this case the error was a 4.4.7.

      Comment


      • #4
        Re: Possible Greylisting Bug?

        I am not referring to the registry change.
        I am referring to a hotfix.
        http://support.microsoft.com/default.aspx/kb/950757/

        The NDR doesn't always say greylisting, it depends on how greylisting has been implemented.

        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

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