From owner-freebsd-security Mon Dec 16 15:39:03 1996 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id PAA14515 for security-outgoing; Mon, 16 Dec 1996 15:39:03 -0800 (PST) Received: from postoffice.cso.uiuc.edu (postoffice.cso.uiuc.edu [128.174.5.11]) by freefall.freebsd.org (8.8.4/8.8.4) with SMTP id PAA14507 for ; Mon, 16 Dec 1996 15:38:58 -0800 (PST) Received: from alecto.physics.uiuc.edu (alecto.physics.uiuc.edu [128.174.83.167]) by postoffice.cso.uiuc.edu (8.6.12/8.6.12) with ESMTP id RAA134396; Mon, 16 Dec 1996 17:38:52 -0600 Received: by alecto.physics.uiuc.edu (940816.SGI.8.6.9/940406.SGI) id RAA22656; Mon, 16 Dec 1996 17:37:35 -0600 From: igor@alecto.physics.uiuc.edu (Igor Roshchin) Message-Id: <199612162337.RAA22656@alecto.physics.uiuc.edu> Subject: Re: mail bomb! To: imp@village.org (Warner Losh) Date: Mon, 16 Dec 1996 17:37:35 -0600 (CST) Cc: ctkwan@cs.hku.hk, pete@sms.fi, security@freebsd.org In-Reply-To: from "Warner Losh" at Dec 16, 96 03:07:09 pm X-Mailer: ELM [version 2.4 PL24] Content-Type: text Sender: owner-security@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > > In message Doug Kwan ~{9XUq5B~} writes: > : Most ISP's have customers who are not computer gurus. Asking them > : to use PGP to verify all our messages would not be a good idea. Anyway > : we would take your advice to digitally sign all our messages. > > However, if you do sign all the messages, then you could filter all > those not signed by the right key. The users needn't know which ones > are good or bad, or how to use pgp even. It would be a big clue to > sendmail to filter out messages based on content (if it can do that). > > Warner > I did not check that but probably, procmail can do "sorting" job, passing through messages from the administration, signed with the right pgp and sending to /dev/null the rest. IgoR aka StR