From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: SMTP server error message Date: Sat, 31 May 2014 19:27:07 +0300 Message-ID: <83ha45ewx0.fsf@gnu.org> References: <83mwdydqcs.fsf@gnu.org> <87oaye57kk.fsf@uwakimon.sk.tsukuba.ac.jp> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1401553663 12464 80.91.229.3 (31 May 2014 16:27:43 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 31 May 2014 16:27:43 +0000 (UTC) Cc: emacs-devel@gnu.org To: "Stephen J. Turnbull" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat May 31 18:27:36 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Wqm7w-00024F-NZ for ged-emacs-devel@m.gmane.org; Sat, 31 May 2014 18:27:24 +0200 Original-Received: from localhost ([::1]:60533 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wqm7w-0001xG-7o for ged-emacs-devel@m.gmane.org; Sat, 31 May 2014 12:27:24 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36228) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wqm7o-0001qu-KA for emacs-devel@gnu.org; Sat, 31 May 2014 12:27:21 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wqm7j-0002TJ-G0 for emacs-devel@gnu.org; Sat, 31 May 2014 12:27:16 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:35968) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wqm7j-0002Sp-8n for emacs-devel@gnu.org; Sat, 31 May 2014 12:27:11 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0N6G00I004WTX000@a-mtaout21.012.net.il> for emacs-devel@gnu.org; Sat, 31 May 2014 19:27:09 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0N6G00IZ65P9W140@a-mtaout21.012.net.il>; Sat, 31 May 2014 19:27:09 +0300 (IDT) In-reply-to: <87oaye57kk.fsf@uwakimon.sk.tsukuba.ac.jp> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 X-Received-From: 80.179.55.169 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:172222 Archived-At: > From: "Stephen J. Turnbull" > Cc: emacs-devel@gnu.org > Date: Sat, 31 May 2014 23:47:07 +0900 > > Eli Zaretskii writes: > > > 451 4.0.0 Spam filter end message failed - server - license [slot 1] > > Greylisting. The idea is that a real MTA will retry (it's a temporary > failure, which means you are being invited to try again later with > exactly the same address and message data), while a spammer will just > move on to the next victim's address. Reduces spam by about 75%, but > most MTAs wait about 4 hours to retry, which is a long time for a list > like emacs-devel. It's not coming from the list, though. It comes from the SMTP server my Emacs is talking to in order to send email. Are you saying that the SMTP server is trying to greylist me personally? Why would it want to do that? > The greylisting MTA normally whitelists you immediately for a period > of time (typically 24 hours) after the first (temporary) failure. > This may explain your 25% failure rate, the others are within the > auto-whitelist period. This doesn't seem to match what I see: If I send the same message several times one after the other, one in 3 or 4 gets this error, the other go through. So there doesn't seem to be any significant time period during which I'm whitelisted. > You don't say which SMTP server you're talking to. It's my ISP's SMTP server.