Email failed to sent to ONE external domain RRS feed

  • Question

  • Hi,

    Just 2 month ago, we upgrade from Exch2003 to Exch2010. All was working fine.

    Then, it was reported that from Internal, we can't send email to this ONE particular domain.

    Below is the bounce back


    Delivery has failed to these recipients or groups:

    The server has tried to deliver this message, without success, and has stopped trying. Please try sending this message again. If the problem continues, contact your helpdesk.
    Diagnostic information for administrators:

    Generating server: exch.yyy.123

    #550 4.4.7 QUEUE.Expired; message expired ##


    Delivery is delayed to these recipients or groups:


    Subject: Test email

    This message hasn't been delivered yet. Delivery will continue to be attempted.

    The server will keep trying to deliver this message for the next 1 days, 19 hours and 55 minutes. You'll be notified if the message can't be delivered by that time.
    Received: from knizam1 ( by exch.yyy.123 (
     with Microsoft SMTP Server id 14.x.x.x; Tue, 18 Feb 2014 09:53:04 +0800
    Message-ID: <9F7CEC3E7F2A447D8AA561BABD38C34A@knizam1>
    From: apps <apps@my2.com>
    To: <soonhoe@abc.123>
    Subject: Test email
    Date: Tue, 18 Feb 2014 09:51:33 +0800
    MIME-Version: 1.0
    Content-Type: multipart/alternative;
    X-Priority: 3
    X-MSMail-Priority: Normal
    X-Mailer: Microsoft Outlook Express 6.00.2900.5931
    X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157
    Return-Path: apps@my2.com
    X-MS-Exchange-Organization-OriginalArrivalTime: 18 Feb 2014 01:53:04.7374
    X-MS-Exchange-Forest-ArrivalHubServer: exch.yyy.123
    X-MS-Exchange-Organization-AuthSource: exch.yyy.123
    X-MS-Exchange-Organization-AuthAs: Internal
    X-MS-Exchange-Organization-AuthMechanism: 0a
    X-MS-Exchange-Organization-MessageDirectionality: Originating
    X-MS-Exchange-Forest-MessageScope: 00000000-0000-0000-0000-000000000000
    X-MS-Exchange-Organization-MessageScope: 00000000-0000-0000-0000-000000000000
    X-MS-Exchange-Organization-OriginalSize: 1701
    X-MS-Exchange-Organization-HygienePolicy: Standard
    X-MS-Exchange-Organization-Recipient-Limit-Verified: True
    X-MS-Exchange-Organization-Processed-By-Journaling: Journal Agent

    Thursday, February 20, 2014 3:03 AM

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