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#550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ## RRS feed

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    We're using Exchange 2007. When emailing to gmail or yahoo externally I get the following error.

    Delivery has failed to these recipients or distribution lists:

    xxxx@yahoo.com
    The recipient's e-mail address was not found in the recipient's e-mail system. Microsoft Exchange will not try to redeliver this message for you. Please check the e-mail address and try resending this message, or provide the following diagnostic text to your system administrator.

    xxxx@gmail.com
    The recipient's e-mail address was not found in the recipient's e-mail system. Microsoft Exchange will not try to redeliver this message for you. Please check the e-mail address and try resending this message, or provide the following diagnostic text to your system administrator.

      _____  

    Sent by Microsoft Exchange Server 2007 







    Diagnostic information for administrators:

    Generating server: WIN.quest2.local

    xxxx@yahoo.com
    #550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##

    xxxx@gmail.com
    #550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##

    Original message headers:

    Received: from WIN.quest2.local ([192.168.15.xx]) by WIN.quest2.local
     ([192.168.15.xx]) with mapi; Mon, 28 Jan 2013 11:32:48 -0500
    Content-Type: application/ms-tnef; name="winmail.dat"
    Content-Transfer-Encoding: binary
    From: Dwayne Clarke <xxxx@mydomian.com>
    To: "xxxx@yahoo.com" <xxxx@yahoo.com>
    CC: "xxxx@gmail.com" <xxxx@gmail.com>
    Date: Mon, 28 Jan 2013 11:32:47 -0500
    Subject: Test
    Thread-Topic: Test
    Thread-Index: Ac39dRtJwG5qPu7WSiqzD6rFU/KMNQ==
    Message-ID: <3632EB1BD3C13149A0D222576723A1DA2643D27672@WIN.quest2.local>
    Accept-Language: en-US
    Content-Language: en-US
    X-MS-Has-Attach: yes
    X-MS-TNEF-Correlator: <3632EB1BD3C13149A0D222576723A1DA2643D27672@WIN.quest2.local>
    MIME-Version: 1.0

    Need some help on this error


    Thursday, January 31, 2013 5:25 PM

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