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ISP Switch Causing Undeliverable Email

    Question

  • Our company switched ISPs to Integra last week and since then every time we email anyone using bigfish.com, I believe this is Microsoft's spam filter, we get the following rejection.  I have emailed the delist address in the body of the email and they continue to insist we are not on their blocked list.  Any help would be appreciated.

    Blocked Response:


    Delivery has failed to these recipients or distribution lists:

    lhall@ncelec.com
    Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.

    The following organization rejected your message: TX2EHSMHS037.bigfish.com.

      _____  

    Sent by Microsoft Exchange Server 2007 







    Diagnostic information for administrators:

    Generating server: MAIL.Tice.ticeelectric.com

    lhall@ncelec.com
    TX2EHSMHS037.bigfish.com #550 5.7.1 Service unavailable; Client host [67.50.17.34] blocked using Blocklist 1, mail from IP banned; To request removal from this list please forward this message to delist@messaging.microsoft.com. ##

    Original message headers:

    Received: from MAIL.Tice.ticeelectric.com ([fe80::5414:cb83:6bf1:7d94]) by
     MAIL.Tice.ticeelectric.com ([fe80::5414:cb83:6bf1:7d94%10]) with mapi; Mon,
     12 Mar 2012 06:42:33 -0700
    From: Pat Maloney <patm@ticeelec.com>
    To: "lhall@ncelec.com" <lhall@ncelec.com>
    Date: Mon, 12 Mar 2012 06:40:13 -0700
    Subject: Fwd: Test Email
    Thread-Topic: Test Email
    Thread-Index: Ac0AVfoHQKLC79zPRf2giYSYrFsDlw==
    Message-ID: <A14F430F-1A8F-4324-A30F-F25BDA5D8B5E@ticeelec.com>
    References: <D59748BC-FFDD-4BB3-8C58-9442DF5009A5@ticeelec.com>
    Accept-Language: en-US
    Content-Language: en-US
    X-MS-Has-Attach:
    X-MS-TNEF-Correlator:
    acceptlanguage: en-US
    Content-Type: text/plain; charset="utf-8"
    Content-Transfer-Encoding: base64
    MIME-Version: 1.0
    Monday, March 12, 2012 3:24 PM

All replies

  • The NDR has the resolution in it.

    "TX2EHSMHS037.bigfish.com #550 5.7.1 Service unavailable; Client host [67.50.17.34] blocked using Blocklist 1, mail from IP banned; To request removal from this list please forward this message to delist@messaging.microsoft.com"

    Send the email to delist@messaging.microsoft.com.  This is being blocked because your IP is on a blocklist.

    FYI, it is recommended to not include personal information, such as email addresses/names/IP addresses in this content as a safety measure for yourself and your intended recipients.


    www.insecurityinc.info

    Monday, March 26, 2012 11:06 PM