<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">About mail servers from residential IPs. I have done that for a number of years, very rarely any issue.<div class=""><br class=""></div><div class="">The major problem was that at one time MS required a reverse lookup for the actual mail server name. That was then fixed by the ISP and all works again.</div><div class="">In my part of the world it is very bad taste for an ISP to block anything, its not their business.</div><div class=""><br class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">-- <br class="">Best regards <br class="">Sten Carlsen <br class=""><br class=""><br class="">For every problem, there is a solution that<br class="">is simple, elegant, and wrong.</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">HL Mencken<br class=""><br class=""></div></div>
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<div><br class=""><blockquote type="cite" class=""><div class="">On 2 May 2020, at 17.11, Michael De Roover <<a href="mailto:isc@nixmagic.com" class="">isc@nixmagic.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">I'm sure that most of the list members here are aware of how net neutrality and the internet in general works - we're internet operators after all. What we're here for is ports and protocols, not policy or internet culture. On that subject, we are not policy makers. Let's leave that to politicians who studied for it. Vote some technical people in government while we're at it, but I digress.<br class=""><br class="">The DoT/DoH argument or what a mail server could be operated from is not one of policy.. well maybe mail servers are, to some extent. Perhaps there's some ISP employees here too. Those are in power to allow or disallow things on their network. But DoT/DoH certainly isn't. What are we supposed to worry about? How do we implement this new encrypted DNS. Do we piggyback off an existing port and rely on its ubiquitous allowance on the internet or do we create a new port for it, where we can make a dedicated new protocol suite?<br class=""><br class="">On 5/2/20 5:03 PM, Reindl Harald wrote:<br class=""><blockquote type="cite" class=""><br class="">Am 02.05.20 um 16:39 schrieb Paul Kosinski via bind-users:<br class=""><blockquote type="cite" class="">I wasn't complaining about port 25, I was just citing it as a<br class="">counterexample to the claim that ISPs "must" pass all traffic.<br class=""></blockquote><a href="https://en.wikipedia.org/wiki/Net_neutrality" class="">https://en.wikipedia.org/wiki/Net_neutrality</a><br class=""><br class=""><blockquote type="cite" class="">I think that most ISPs tell customers how to set up their email clients<br class="">(NUAs) including what port to use. Of course it seems that now most<br class="">people use Web based email like Gmail, Yahoo (and even Comcast/Xfinity)<br class="">so they never see port numbers.<br class=""><br class=""><br class="">On Sat, 2 May 2020 15:51:58 +0200<br class="">Reindl Harald <h.reindl@thelounge.net> wrote:<br class=""><br class=""><blockquote type="cite" class="">Am 02.05.20 um 15:41 schrieb Michael De Roover:<br class=""><blockquote type="cite" class="">In my experience and from what I've heard, very few.<br class=""></blockquote>if that would be true how comes that most mail clients still default to<br class="">25 for submission and years after closing port 25 on our mailserver i<br class="">still struggle with customers smartphones still not using 587?<br class=""><br class="">in fact 10 years ago some ISP's *tried* to kill outbound port 25 because<br class="">there is no point in using it from a homemachine and at that time we<br class="">struggeled also to explain our customers that 25 is plain wrong<br class=""><br class="">finally they gave up because the damage of open port 25 is killed with<br class="">dnsbl but the customer support went crazy with "why can't i send email<br class="">with my internet connection"<br class=""><br class=""><blockquote type="cite" class="">Even if your ISP allows it, chances are that other mail servers will reject it<br class=""></blockquote>that's a completl different story<br class=""><br class=""><blockquote type="cite" class="">On 5/2/20 3:30 PM, Paul Kosinski via bind-users wrote:<br class=""><blockquote type="cite" class="">How many ISPs allow traffic on port 25? My impression is that even many<br class="">(non-enterprise) business customers can't use port 25<br class=""></blockquote></blockquote></blockquote></blockquote>_______________________________________________<br class="">Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list<br class=""><br class="">bind-users mailing list<br class="">bind-users@lists.isc.org<br class="">https://lists.isc.org/mailman/listinfo/bind-users<br class=""></blockquote>-- <br class="">Met vriendelijke groet / Best regards,<br class="">Michael De Roover<br class="">_______________________________________________<br class="">Please visit <a href="https://lists.isc.org/mailman/listinfo/bind-users" class="">https://lists.isc.org/mailman/listinfo/bind-users</a> to unsubscribe from this list<br class=""><br class="">bind-users mailing list<br class=""><a href="mailto:bind-users@lists.isc.org" class="">bind-users@lists.isc.org</a><br class="">https://lists.isc.org/mailman/listinfo/bind-users<br class=""></div></div></blockquote></div><br class=""></div></body></html>