From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.3 required=5.0 tests=FREEMAIL_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 4631 invoked from network); 4 Jul 2023 20:34:38 -0000 Received: from lists.gnu.org (209.51.188.17) by inbox.vuxu.org with ESMTPUTF8; 4 Jul 2023 20:34:38 -0000 Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qGmjD-0000uu-66; Tue, 04 Jul 2023 16:34:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qGmjA-0000um-Ta for info-gnus-english@gnu.org; Tue, 04 Jul 2023 16:34:24 -0400 Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qGmj9-0004JD-GF for info-gnus-english@gnu.org; Tue, 04 Jul 2023 16:34:24 -0400 Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1qGmj7-0006js-F5 for info-gnus-english@gnu.org; Tue, 04 Jul 2023 22:34:21 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: info-gnus-english@gnu.org From: Richmond Subject: A look at free.usenet reveals the need for matching on high entropy random strings Date: Tue, 04 Jul 2023 21:34:16 +0100 Organization: Frantic Message-ID: <85sfa31kmv.fsf@example.com> Mime-Version: 1.0 Content-Type: text/plain User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) Cancel-Lock: sha1:Bdieqeav+mz1LaB/ZoMze8Asf7k= Received-SPF: pass client-ip=116.202.254.214; envelope-from=gegu-info-gnus-english@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: info-gnus-english@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Announcements and discussions for GNUS, the GNU Emacs Usenet newsreader \(in English\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: info-gnus-english-bounces+ml=inbox.vuxu.org@gnu.org Sender: info-gnus-english-bounces+ml=inbox.vuxu.org@gnu.org A look at free.usenet reveals the need for matching on high entropy random strings. These are being used in the from header to thwart filters. It ought to be possible to match on a high entropy string. Is it possible? Perhaps re-use password strength measuring code.