Hotmail Blocking Itself as Spammer RRS feed

  • Question

  • I have recently experienced an inability to send email from my hotmail account to users of other email systems. Specifically, I get a bounce from postmaster@outlook.com saying:

    Delivery has failed to these recipients or groups:

    A problem occurred during the delivery of this message. Please try to resend the message later.

    Diagnostic information for administrators:

    Generating server: DM5PR10MB1481.namprd10.prod.outlook.com
    Remote Server returned '533 5.4.0 Your message seems to have triggered our junk email filters. Could you edit your message and try again?'
    Original message headers:

    Received: from DM5PR10MB1481.namprd10.prod.outlook.com ([]) by
     DM5PR10MB1481.namprd10.prod.outlook.com ([]) with mapi id
     15.01.1047.019; Mon, 24 Apr 2017 14:05:27 +0000
    MIME-Version: 1.0
    Content-Type: text/plain
    Date: Mon, 24 Apr 2017 14:05:27 +0000
    Subject: Re: zzz

    "xxx@yyy" replaces the original intended recipient's email address and "Re: zzz" replaces the original subject line.

    The issue appears to be that Hotmail has labeled its own IP address as the origination of so much spam that it now blocks emails from that IP address, thwarting my ability to send a normal email to a normal person. Obviously, that sucks for me.



    Monday, April 24, 2017 2:39 PM


  • They'll help you over here.




    Regards, Dave Patrick ....
    Microsoft Certified Professional
    Microsoft MVP [Windows Server] Datacenter Management

    Disclaimer: This posting is provided "AS IS" with no warranties or guarantees, and confers no rights.

    • Proposed as answer by Just Karl Friday, April 28, 2017 4:41 PM
    • Marked as answer by Dave PatrickMVP Thursday, May 4, 2017 1:30 PM
    Thursday, April 27, 2017 3:24 AM