From owner-freebsd-questions Wed Aug 26 10:24:10 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id KAA07706 for freebsd-questions-outgoing; Wed, 26 Aug 1998 10:24:10 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from mailhost.criterion.canon.co.uk (cruella.criterion.canon.co.uk [194.223.249.254]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id KAA07697 for ; Wed, 26 Aug 1998 10:24:04 -0700 (PDT) (envelope-from adamn@criterion.canon.co.uk) Received: from criterion.canon.co.uk (hermes.criterion.canon.co.uk [194.223.249.13]) by mailhost.criterion.canon.co.uk (8.8.8/8.7.3) with ESMTP id SAA19630; Wed, 26 Aug 1998 18:18:02 +0100 (BST) Message-ID: <35E442BC.7D296EC3@criterion.canon.co.uk> Date: Wed, 26 Aug 1998 18:15:40 +0100 From: Adam Nealis Organization: Criterion Software, Ltd. X-Mailer: Mozilla 4.05 [en] (X11; I; Linux 2.0.34 i686) MIME-Version: 1.0 To: pat.groce@state.sd.us CC: freebsd-questions@FreeBSD.ORG Subject: Re: SPAM HELP References: <5D2C95997022D21187350008C7F4CF7902EDFB@ESPR1SRV5> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG pat.groce@state.sd.us wrote: > Our freebsd box is currently being used for redirected spam messages. > Sometimes 6000-7000 messages a day! Any idea on how i can prevent this? > Is there a web page or other resource covering this topic? On > freebsd.org i found some stuff on filtering inbound spam but nothing on > this redirection problem. It sounds like you are being used as a "SPAM relay". You need to prevent unauthorised hosts from doing this. Pay a visit tohttp://www.informatik.uni-kiel.de/%7Eca/email/check.html and read the lot, but you really want the check_relay stuff. Basically you prevent e-mail from being sent via your mail server. Adam. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message