Monday, June 7, 2010

Net neutrality: Our experience with Yahoo email blocking

More than two years trying to get off Yahoo spam list, and they're still blocking our email. Latest message to hundreds of our emails is:

xxxxx@btinternet.com: host mx2.bt.mail.yahoo.com[195.50.106.142] refused to talk to me: 421 4.7.1 [TS03] All messages from 216.194.248.199 will be permanently deferred; Retrying will NOT succeed. See http://postmaster.yahoo.com/errors/421-ts03.html

2 comments:

  1. We had a similar problem which we managed to mostly resolve with this fix:

    you'll need to add a spf record to your dns server.

    regards

    ReplyDelete
  2. Yahoo is again blocking all our email. Here's what we get back with every mail (we've hidden the email address):

    From: Mail Delivery Subsystem
    Subject: Returned mail: see transcript for details


    This is a MIME-encapsulated message

    --oBRKUuFN006510.1293482280/bo202.his.com

    The original message was received at Wed, 22 Dec 2010 15:21:31 -0500
    from 96-26-127-89.wsh.clearwire-wmx.net [96.26.127.89] (may be forged)

    ----- The following addresses had permanent fatal errors -----


    ----- Transcript of session follows -----
    ... Deferred
    Message could not be delivered for 5 days
    Message will be deleted from queue

    --oBRKUuFN006510.1293482280/bo202.his.com
    Content-Type: message/delivery-status

    Reporting-MTA: dns; bo202.his.com
    Arrival-Date: Wed, 22 Dec 2010 15:21:31 -0500

    Final-Recipient: RFC822; xxxxx@yahoo.com
    Action: failed
    Status: 4.4.7
    Remote-MTA: DNS; i.mx.mail.yahoo.com
    Last-Attempt-Date: Mon, 27 Dec 2010 15:38:00 -0500

    --oBRKUuFN006510.1293482280/bo202.his.com
    Content-Type: message/rfc822

    Return-Path:
    Received: from [192.168.1.10] (96-26-127-89.wsh.clearwire-wmx.net [96.26.127.89] (may be forged))
    (authenticated bits=0)
    by bo202.his.com (8.13.8/8.13.8) with ESMTP id oBMKLUg2026775
    for ; Wed, 22 Dec 2010 15:21:31 -0500
    User-Agent: IntelliMerge 5.1

    ReplyDelete