From spamassassin-talk-admin@lists.sourceforge.net Mon Aug 26 16:47:05 2002 Return-Path: Delivered-To: yyyy@localhost.netnoteinc.com Received: from localhost (localhost [127.0.0.1]) by phobos.labs.netnoteinc.com (Postfix) with ESMTP id 7FFB144159 for ; Mon, 26 Aug 2002 11:46:45 -0400 (EDT) Received: from phobos [127.0.0.1] by localhost with IMAP (fetchmail-5.9.0) for jm@localhost (single-drop); Mon, 26 Aug 2002 16:46:45 +0100 (IST) Received: from usw-sf-list2.sourceforge.net (usw-sf-fw2.sourceforge.net [216.136.171.252]) by dogma.slashnull.org (8.11.6/8.11.6) with ESMTP id g7QFYmZ29978 for ; Mon, 26 Aug 2002 16:34:49 +0100 Received: from usw-sf-list1-b.sourceforge.net ([10.3.1.13] helo=usw-sf-list1.sourceforge.net) by usw-sf-list2.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17jLsS-00026y-00; Mon, 26 Aug 2002 08:34:04 -0700 Received: from tisch.mail.mindspring.net ([207.69.200.157]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17jLrj-0004FI-00 for ; Mon, 26 Aug 2002 08:33:19 -0700 Received: from user-105nd99.dialup.mindspring.com ([64.91.181.41] helo=belphegore.hughes-family.org) by tisch.mail.mindspring.net with esmtp (Exim 3.33 #1) id 17jLrg-0001cc-00; Mon, 26 Aug 2002 11:33:16 -0400 Received: from balam.hughes-family.org (balam.hughes-family.org [10.0.240.3]) by belphegore.hughes-family.org (Postfix) with ESMTP id 6DD56A4D20; Mon, 26 Aug 2002 08:33:15 -0700 (PDT) Subject: Re: Whitelisting (Re: [SAtalk] SA In The News) Content-Type: text/plain; charset=US-ASCII; format=flowed MIME-Version: 1.0 (Apple Message framework v482) Cc: SpamAssassin Talk ML To: Bart Schaefer From: "Craig R.Hughes" In-Reply-To: Message-Id: <25C208FC-B909-11D6-9F1A-00039396ECF2@deersoft.com> Content-Transfer-Encoding: 7bit X-Mailer: Apple Mail (2.482) Sender: spamassassin-talk-admin@example.sourceforge.net Errors-To: spamassassin-talk-admin@example.sourceforge.net X-Beenthere: spamassassin-talk@example.sourceforge.net X-Mailman-Version: 2.0.9-sf.net Precedence: bulk List-Help: List-Post: List-Subscribe: , List-Id: Talk about SpamAssassin List-Unsubscribe: , List-Archive: X-Original-Date: Mon, 26 Aug 2002 08:33:19 -0700 Date: Mon, 26 Aug 2002 08:33:19 -0700 X-Pyzor: Reported 0 times. X-Spam-Status: No, hits=-6.8 required=7.0 tests=EMAIL_ATTRIBUTION,FORGED_RCVD_TRAIL,FOR_FREE,IN_REP_TO, KNOWN_MAILING_LIST,QUOTED_EMAIL_TEXT,SPAM_PHRASE_03_05, SUBJECT_IS_NEWS,USER_AGENT_APPLEMAIL version=2.40-cvs X-Spam-Level: There is a whitelist RBL now! Ironport's Bonded Sender is basically a whitelist RBL where you post a bond to get on the list, and then lose the bond if you end up spamming from that IP address (or something like that). http://www.bondedsender.org/ C On Sunday, August 25, 2002, at 07:58 PM, Bart Schaefer wrote: >> 4. DNSBL: Only certifies an ip address, not who is using it. As it is >> currently used, DNSBL allows you to look up if some IP address >> has been >> blacklisted by someone. What I haven't seen is a service that >> provides a >> DNS based whitelist. > > There's a practical reason for that: Any DNS list (white or > black) works > only for a limited number of IPs; the set of unlisted IPs is > much larger > than the set in the DNS list. If you have to make a binary decision to > accept or reject, you'll be wrong less often if you reject the > blacklist > and accept everything else, rather than accept the whitelist and reject > everything else. > > A whitelist is only helpful when (a) you only want mail from a limited > number of known sources, or (b) you can use a secondary system > like SA to > decide what to do with the vast unlisted masses. Most MTAs still make > only the binary decision, because the secondary computation is > expensive. > > With SA's cooperation, though, it might be worth a try. Even better if > one could get commercial anti-spam outfits to agree to factor it in. ------------------------------------------------------- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1&refcode1=vs3390 _______________________________________________ Spamassassin-talk mailing list Spamassassin-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spamassassin-talk