From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/46016 Path: main.gmane.org!not-for-mail From: David Masterson Newsgroups: gmane.emacs.gnus.general Subject: Re: TMDA (was: new spam functionality added) Date: 05 Aug 2002 13:18:52 -0700 Sender: owner-ding@hpc.uh.edu Message-ID: References: <87y9brejam.fsf@mail.paradoxical.net> <873ctztyth.fsf@mail.paradoxical.net> <20020801222925.A10502@mastaler.com> NNTP-Posting-Host: localhost.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1028578760 16687 127.0.0.1 (5 Aug 2002 20:19:20 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 5 Aug 2002 20:19:20 +0000 (UTC) Return-path: Original-Received: from malifon.math.uh.edu ([129.7.128.13]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 17boJy-0004L2-00 for ; Mon, 05 Aug 2002 22:19:19 +0200 Original-Received: from sina.hpc.uh.edu ([129.7.128.10] ident=lists) by malifon.math.uh.edu with esmtp (Exim 3.20 #1) id 17boJy-0008Sg-00; Mon, 05 Aug 2002 15:19:18 -0500 Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Mon, 05 Aug 2002 15:19:45 -0500 (CDT) Original-Received: from sclp3.sclp.com (qmailr@sclp3.sclp.com [209.196.61.66]) by sina.hpc.uh.edu (8.9.3/8.9.3) with SMTP id PAA21254 for ; Mon, 5 Aug 2002 15:19:29 -0500 (CDT) Original-Received: (qmail 20898 invoked by alias); 5 Aug 2002 20:18:55 -0000 Original-Received: (qmail 20893 invoked from network); 5 Aug 2002 20:18:54 -0000 Original-Received: from main.gmane.org (80.91.224.249) by gnus.org with SMTP; 5 Aug 2002 20:18:54 -0000 Original-Received: from list by main.gmane.org with local (Exim 3.35 #1 (Debian)) id 17boIt-0004HC-00 for ; Mon, 05 Aug 2002 22:18:11 +0200 Original-To: ding@gnus.org X-Injected-Via-Gmane: http://gmane.org/ Original-Received: from news by main.gmane.org with local (Exim 3.35 #1 (Debian)) id 17boIs-0004H4-00 for ; Mon, 05 Aug 2002 22:18:10 +0200 Original-Path: not-for-mail Original-Newsgroups: gmane.emacs.ding Original-Lines: 27 Original-NNTP-Posting-Host: dhcp-146-225-32-145.synopsys.com Original-X-Trace: main.gmane.org 1028578690 11513 146.225.32.145 (5 Aug 2002 20:18:10 GMT) Original-X-Complaints-To: usenet@main.gmane.org Original-NNTP-Posting-Date: Mon, 5 Aug 2002 20:18:10 +0000 (UTC) User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.1 Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:46016 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:46016 >>>>> Simon Josefsson writes: > prj@po.cwru.edu (Paul Jarc) writes: >> Per Abrahamsen wrote: >>> If a reliable autoconfirmer were written, some spammers would >>> start using it. >> In doing so, they would give up their anonymity. We'd be able to >> find them and report them (and blacklist them). > Is this the problem? In theory I can track down IP's on the net > today, but tracking down spammers this way doesn't seem like a > solution that prevents all spam in practice, as spammers uses hacked > or incorrectly configured machines. When the spammer assumes that no one can reply to his message, then all these things can be spoofed in the email. All you really know is the hostname and IP address of the last relayer of the email which is something that spammers rely upon to maintain their anonymity. If the spammer decides to put in an autoconfirmer to get around TMDA, then he has to supply a good "return address" in his SPAM which now makes him traceable. Even if it's only traceable back to a compromised machine, that machine can be blacklisted and the sysadmin informed to fix it. -- David Masterson David DOT Masterson AT synopsys DOT com Sr. R&D Engineer Synopsys, Inc. Software Engineering Sunnyvale, CA