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<body><div>Thanks for that Sebastian.<br></div>
<div><br></div>
<div>Furthermore, it looks like this was one of a number of informal agreements between hosts to do this sort of 'feedback loop' - then it got somewhat standardised in the following RFC:<br></div>
<div><br></div>
<div><a href="https://tools.ietf.org/html/rfc6449">https://tools.ietf.org/html/rfc6449</a><br></div>
<div><br></div>
<div>'Complaint Feedback Loop Operational Recommendations'<br></div>
<div><br></div>
<div>Relevant bit:<br></div>
<div><br></div>
<div>"<br></div>
<div><br></div>
<div> The intent of a Complaint Feedback Loop is to provide Feedback<br></div>
<div> Consumers with information necessary to mitigate Spam or the<br></div>
<div> perception of Spam. Thus, feedback was originally only offered to<br></div>
<div> mailbox, access, and network providers -- in other words, to ISPs --<br></div>
<div> who would use the feedback to identify network compromises and<br></div>
<div> fraudulent accounts or to notify their downstream customer that there<br></div>
<div> may be a problem.<br></div>
<div><br></div>
<div> Senders of bulk, transactional, social, or other types of email can<br></div>
<div> also use this feedback to adjust their mailing practices, using Spam<br></div>
<div> Complaints as an indicator of whether the Recipient wishes to<br></div>
<div> continue receiving email. Common reactions often include refining<br></div>
<div> opt-in practices, mailing frequency, list management, message<br></div>
<div> content, and other measures. Over time, this has become the Feedback<br></div>
<div> Consumer use case most often discussed at MAAWG meetings and other<br></div>
<div> industry events -- but readers are cautioned that it is not the sole<br></div>
<div> use for feedback.<br></div>
<div>"<br></div>
<div><br></div>
<div>Cheers,<br></div>
<div><br></div>
<div><br></div>
<div>Paul</div>
<div><br></div>
<div id="sig65570336"><div class="signature">--<br></div>
<div class="signature"> Paul Furley<br></div>
<div class="signature"> paul@paulfurley.com<br></div>
<div class="signature"><br></div>
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<div><br></div>
<div><br></div>
<div>On Thu, 21 Sep 2017, at 08:59, Sebastian Arcus wrote:<br></div>
<div>> I think Paul asked during the presentation at the last LivLUG about a<br></div>
<div>> feedback programme which would let you know how many of the emails<br></div>
<div>> you've sent have been marked as Junk. I've just stumbled over one such<br></div>
<div>> tool from Microsoft called JMRP - Junk Mail Reporting Programme. This is<br></div>
<div>> part of their suite of tools for email senders - together with SNDS. It<br></div>
<div>> is free to sign-up, and after obtaining authorization, you can receive<br></div>
<div>> regular reports of how many emails sent from a particular IP address<br></div>
<div>> have been marked as Junk by Hotmail/Outlook.com/Live.com users.<br></div>
<div>><br></div>
<div>> I don't know if Google has a similar programme for Gmail - but it is<br></div>
<div>> possible.<br></div>
<div>><br></div>
<div>> I guess MailGun are plugged into the above feed, and that's how they get<br></div>
<div>> the information.<br></div>
<div>><br></div>
<div>> More details and sign-up link: https://postmaster.live.com/snds/<br></div>
<div><br></div>
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