From owner-freebsd-questions@FreeBSD.ORG Sat Apr 21 20:50:45 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id BD12916A402 for ; Sat, 21 Apr 2007 20:50:45 +0000 (UTC) (envelope-from jack@jarasoft.net) Received: from raats.xs4all.nl (raats.xs4all.nl [82.95.230.43]) by mx1.freebsd.org (Postfix) with ESMTP id 780DB13C484 for ; Sat, 21 Apr 2007 20:50:45 +0000 (UTC) (envelope-from jack@jarasoft.net) Received: from raats.xs4all.nl (localhost.jarasoft.net [127.0.0.1]) by raats.xs4all.nl (Postfix) with ESMTP id DD58616A443; Sat, 21 Apr 2007 22:35:13 +0200 (CEST) Received: from jara3 (unknown [192.168.1.67]) by raats.xs4all.nl (Postfix) with ESMTP id ADA9B16A441; Sat, 21 Apr 2007 22:35:13 +0200 (CEST) Message-ID: <008201c78454$8e663250$0202fea9@jarasoft.net> From: "Jack Raats" To: "Grant Peel" , References: <002001c7836b$06534bd0$6501a8c0@GRANT> Date: Sat, 21 Apr 2007 22:35:09 +0200 Organization: JaRaSoft, Steenbergen, Nederland MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: ClamAV using ClamSMTP Cc: Subject: Re: Anti Spam X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Jack Raats List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Apr 2007 20:50:45 -0000 Hi Grant, I'm using postfix and a very good sets of pcre rules which takes care of more than 90% of all spam. Spamassassin will do the rest. The only spam I receive is on my postmaster account. Postfix uses greylisting, a set of rbl lists and a pcre rule set op the helo check and client_access_check. At this moment I'm blocking all ips belonging to customers of cable and adsl networks, because there are the most botnets. The helo_checks at this moment are: /^[0-9.]+$/ REJECT Please use your ISP's outgoing mail server - HA /^\|/ REJECT Please use your ISP's outgoing mail server - HB /^[\d\.]+$/ REJECT Please use your ISP's outgoing mail server - HC # H1 adsl,dial, dhcp, cable, retail, dynamic in hostname /(adsl|dial|dhcp|cable|retail|dynamic)/i REJECT Please use your ISP's outgoing mail server - H1 # H2 customer, dial, local, static in hostname /(customer|local|static)/i REJECT Please use your ISP's outgoing mail server - H2 # H3 1234 /\d{4}/ REJECT Please use your ISP's outgoing mail server - H3 # H4 123-123-123 /\d{1,3}-\d{1,3}-\d{1,3}/ REJECT Please use your ISP's outgoing mail server - H4 # H5 123.123.123 # /\d{1,3}\.\d{1,3}\.\d{1,3}/ REJECT Please use your ISP's outgoing mail server - H5 Untill now no false positves! So, first take a very good look to your MTA! Jack ----- Original Message ----- From: "Grant Peel" To: Sent: Friday, April 20, 2007 6:43 PM Subject: Anti Spam Hi all, I am posting this question here because I know there are alot of ISPs using FreeBSD (including me) and am hoping to get feedback, either directly to me or to the list. We are wrestling (as I am sure many are), with spam. Up until now we have been employing Spamassassin locally and using some 3rd party Anti-Spam servervices that are getting less and less reliable as the weeks go by. We are considering two hardware solutions, Easyantispam and Barracuda. Barracuda is very expensive, so the most likely candidate is Easyantispam. Does anyone out there have thought on either or both of these? Usability? Reliability? Total Cost of ownership? Integration issues? Any thoughts will be appreciated, -Grant _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"