From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/66961 Path: news.gmane.org!not-for-mail From: asjo@koldfront.dk (Adam =?iso-8859-1?Q?Sj=F8gren?=) Newsgroups: gmane.emacs.gnus.general Subject: Re: sendmail ssl authentication Date: Sun, 18 May 2008 06:07:12 +0200 Organization: koldfront - analysis & revolution, Copenhagen, Denmark Message-ID: <87d4nk45n3.fsf@topper.koldfront.dk> References: <87bq37aba8.fsf@newsguy.com> <874p8y5dxt.fsf@newsguy.com> <87fxsh4z8e.fsf@newsguy.com> <87lk29ntjb.fsf@topper.koldfront.dk> <8763tc7auk.fsf@newsguy.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1211083727 13789 80.91.229.12 (18 May 2008 04:08:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 18 May 2008 04:08:47 +0000 (UTC) To: ding@gnus.org Original-X-From: ding-owner+M15437@lists.math.uh.edu Sun May 18 06:09:23 2008 Return-path: Envelope-to: ding-account@gmane.org Original-Received: from util0.math.uh.edu ([129.7.128.18]) by lo.gmane.org with esmtp (Exim 4.50) id 1JxaD3-0002ju-Ui for ding-account@gmane.org; Sun, 18 May 2008 06:09:22 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.math.uh.edu) by util0.math.uh.edu with smtp (Exim 4.63) (envelope-from ) id 1JxaBQ-0008Lu-9h; Sat, 17 May 2008 23:07:40 -0500 Original-Received: from mx2.math.uh.edu ([129.7.128.33]) by util0.math.uh.edu with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1JxaBO-0008Le-TN for ding@lists.math.uh.edu; Sat, 17 May 2008 23:07:38 -0500 Original-Received: from quimby.gnus.org ([80.91.231.51]) by mx2.math.uh.edu with esmtp (Exim 4.67) (envelope-from ) id 1JxaBI-0002Ol-RV for ding@lists.math.uh.edu; Sat, 17 May 2008 23:07:38 -0500 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by quimby.gnus.org with esmtp (Exim 3.35 #1 (Debian)) id 1JxaBU-0002Y8-00 for ; Sun, 18 May 2008 06:07:44 +0200 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1JxaBA-0003TX-2I for ding@gnus.org; Sun, 18 May 2008 04:07:24 +0000 Original-Received: from rain.gmane.org ([80.91.229.7]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 18 May 2008 04:07:24 +0000 Original-Received: from asjo by rain.gmane.org with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 18 May 2008 04:07:24 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 40 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: rain.gmane.org X-Face: )qY&CseJ?.:=8F#^~GcSA?F=9eu'{KAFfL1C3/A&:nE?PW\i65"ba0NS)97,Q(^@xk}n4Ou rPuR#V8I(J_@~H($[ym:`K_+]*kjvW>xH5jbgLBVFGXY:(#4P>zVBklLbdL&XxL\M)%T}3S/IS9lMJ ^St'=VZBR Precedence: bulk Xref: news.gmane.org gmane.emacs.gnus.general:66961 Archived-At: On Sat, 17 May 2008 18:46:27 -0500, reader@newsguy.com wrote: > So did you mean that it is common for ISPs to block their own users > but not users from the internet? What would that do for them. It would prevent their users from beying exploited as a spam-relay and sending spam out through their own ISP. > It seems it would more likely help them to do it the other way round > or like you said... just block all to port 25. Spam makes people do annoying things. > But it turns out there is an smtp server running on port 25 but I > cannot get to it, but people on the internet can... > On the face of it, it sounds ridiculous, so I don't understand why > they would do that. They need to accept email from the net, obviously. A guess would be that for their own users - to minimize the spam that they are "responsible" for - they have a description that says how their users should send email (probably via another port, 587 maybe, and with a login/password) and port 25 is blocked. It is important for some ISPs to "keep their own backyard clean" - but they can't ask other people in the world to follow their special guidelines (only their own customers have login/passwords). I think it makes perfect, albeit twisted, sense. Best regards, Adam -- "Gravity is arbitrary!" Adam Sjøgren asjo@koldfront.dk