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Thread: 550 SC-001 Mail rejected by Windows Live Hotmail

  1. #1
    Join Date
    Jul 2007
    Rep Power

    Default 550 SC-001 Mail rejected by Windows Live Hotmail

    All of a sudden all my email sent to hotmail is getting bounced - not spammed, bounced.

    Here is the message I'm getting:

    This is the mail system at host

    I'm sorry to have to inform you that your message could not
    be delivered to one or more recipients. It's attached below.

    For further assistance, please send mail to postmaster.

    If you do so, please include this problem report. You can
    delete your own text from the attached returned message.

    The mail system

    <>: host[] said: 550 SC-001
    Mail rejected by Windows Live Hotmail for policy reasons. Reasons for
    rejection may be related to content with spam-like characteristics or
    IP/domain reputation problems. If you are not an email/network admin please
    contact your E-mail/Internet Service Provider for help. Email/network
    admins, please visit MSN Postmaster for email delivery
    information and support (in reply to MAIL FROM command)

    My setup is correct:

    The Port25 Solutions, Inc. team

    ================================================== ========
    Summary of Results
    ================================================== ========
    SPF check: pass
    DomainKeys check: neutral
    DKIM check: pass
    Sender-ID check: pass
    SpamAssassin check: ham

    RDNS is correct too. I do see that my colo is listed in a RBL (and therefore my IP, called UCEPROTECTL2, UCEPROTECTL3 because too many "abusers" are hosted at my colo.

    Think that's enough for hotmail to reject everything?

  2. #2
    Join Date
    Aug 2007
    Hayward, CA USA
    Rep Power


    Probably doesnt have anything to do with zimbra, hotmail will block anyone for just about anything. (i've had the same issue) this link is burried, but its the form that you fill out to request that you be taken off thier internal RBL.

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