<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Feb 27, 2018 at 5:15 AM, Ersin Taskin <span dir="ltr"><<a href="mailto:hersintaskin@gmail.com" target="_blank">hersintaskin@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">
<div class="gmail_extra" style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">I received some remarks and challenges to my proposal for PSMTP. Some through the mail list, some in private. I researched the anti-spam state-of-the-art on the web. I checked patents, implementations, services, products, techniques, etc. </div></div></blockquote><div>... </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra" style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><span style="font-size:12.8px">If you read all the way here, your feedback is precious.</span></div></div></blockquote><div><br></div><div><br></div><div>I think spam is hear to stay. <br>However the equivalent of first class delivery from registered senders is almost easy and <br></div><div>we are doing part of it now.<br><br>I am not a member of one of the lists in my To: line, I expect a bounce.<br><br>I am a member of the first list in the To: line and I expect to get a moderator approval hang tight note. <br><br>I am replying to Ersin... his mail system may drop filter bounce or deliver my message. I can remember <br>him or allow the list to filter messages from him.<br><br>Each is an example of a white, grey, black list delivery system.<br><br>Missing is an identification that justifies this in a cryptographic lists.</div><div><br></div><div>I am using a web interface to a mail service. That service could cryptographically sign all my messages <br>and put the signature in the message or a header to aid filters. Recipients and re-senders (list servers) can</div><div>inspect that signature and decide. <br><br>Introductions can be implied or co-signed by a list server. I can thus optionally capture a credential for Ersin<br>and associate it in an address book with an action.<br><br>SMTP authentication today is domain based... extending to add a post delivery hook for user@ could allow a finer grained<br>management. I suspect *@<a href="http://gmail.com">gmail.com</a> embraces nearly some 1.7 billion accounts. so SMTP authentication<br>from <a href="http://gmail.com">gmail.com</a> is a bit coarse. <br><br>My snail mail is managed much the same... A first class stamp puts in pile "A" and bulk rate ... in another.<br>A return address from a friend gets my attention and makes my reply easy. Christmas cards make it easy to</div><div>keep up with friends that bring their rolodex to their new home. <br><br>List servers like this one might validate and allow the notion of c/o or "care of" messages.<br>thus "<a href="mailto:hersintaskin@gmail.com">hersintaskin@gmail.com</a>%<a href="mailto:cryptography@metzdowd.com">cryptography@metzdowd.com</a>" with a credential might<br>have merit. <br><br>Golly the list manager could maintain the list and associated credentials in a blockchain ;-)<br><br>"Imap or pop" could locall put some of these services in place and still allow the resources of gmail <br>and cloud power. <br><br></div></div><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"> T o m M i t c h e l l</div></div>
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