From owner-freebsd-isp@FreeBSD.ORG Fri Nov 23 03:11:48 2007 Return-Path: Delivered-To: freebsd-isp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 68B1516A420 for ; Fri, 23 Nov 2007 03:11:48 +0000 (UTC) (envelope-from qingran.xia@gmail.com) Received: from mu-out-0910.google.com (mu-out-0910.google.com [209.85.134.191]) by mx1.freebsd.org (Postfix) with ESMTP id 0EF5B13C457 for ; Fri, 23 Nov 2007 03:11:47 +0000 (UTC) (envelope-from qingran.xia@gmail.com) Received: by mu-out-0910.google.com with SMTP id i10so3636053mue for ; Thu, 22 Nov 2007 19:11:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=3QvEYtoxYrFaRb72XawuJyIyuV7WH+QKyGDfMOwm0bE=; b=IKTubVvM9crhiniZzjA5kjCgx9zygCiPkrwYRgR2LOhEqCOKtDEZuSaTbF8huCEjN8AuHe5S7z9u2iZ57kjItATlBILCh9T/6XUt6rfNqsbiphKzgjepsTz6dwD0dI4mtNO0a6E6vnXmnogwJGM8TW3xNhOnRmiKuf+SigCR/fU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=bXTfz675n4E2gh64EPlGOjq7k/KSjLv48ZYGOOeYTJeDEwsRbF73RUSxxmJrcMqez6DLCgOJg4e1zOMoL+zEptXUMRDXgsH2RUROtA2FVDnTIdk/lnkTP+gtMYaB4IT51JENeI3SdKbyKlwYoD7eb3Gykou5otR3MdGj6hQfaEA= Received: by 10.82.173.19 with SMTP id v19mr3392573bue.1195786042453; Thu, 22 Nov 2007 18:47:22 -0800 (PST) Received: by 10.82.160.12 with HTTP; Thu, 22 Nov 2007 18:47:22 -0800 (PST) Message-ID: Date: Fri, 23 Nov 2007 10:47:22 +0800 From: "Qingran Xia" To: "Mitchell Smith" In-Reply-To: <00c401c82cc4$5bcd6a20$580116ac@mjspcbook> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <00c401c82cc4$5bcd6a20$580116ac@mjspcbook> Cc: freebsd-isp@freebsd.org Subject: Re: Spam Filter Efficiency X-BeenThere: freebsd-isp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Internet Services Providers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Nov 2007 03:11:48 -0000 I strongly recommend you to take use of amavisd-new to run SpamAssassin and Clamav. Because all the things about spam and virus checks are loaded and run in the amavisd-new daemon's process. In my website, a Dual Xeon with 4GB ram box can check more than 500,000 messages per day. And I turn on the RBL, Razor, pyzor and URIBL checks of SpamAssassin. On Nov 22, 2007 12:58 PM, Mitchell Smith wrote: > Greetings List, > > I apologize if this topic has already been raised, however I would like some feedback on how people are managing spam in high volume email environments. > > To give you a little background, our organization currently has three reasonably powerful boxes (dual XEON with 4GB ram), processing about 800000 messages > a day (total) and are seriously struggling under the load. > > Our configuration consists of Postfix with a couple of RBL checks, GLD greylisting (central MySQL db), which falls through to MailScanner which filters > with SpamAssassin / Clamav. > > >From the mail scanners, the emails are the forwarded (via an LDAP lookup) to a specific Cyrus mail store. > > We have turned off DCC checks in SpamAssassin which has improved performance quite a bit, however we are still doing Razor checks. > > We have investigated a couple of commercial solutions which clamed to be able to handle more than our quantity of mail on one box, however the spectacular > pricetags associated with such solutions suggest we won't be moving forward with these any time soon. > > We are also looking at other open source solutions such as amavis / dspam to see if we can try and improve the throughput on our current hardware. > > What I would like some feedback on is if anyone has already gone down this path and found one solution that performs better than another, or if anyone is > using a similar setup to ours and has found better ways to optimise it. > > I would very much appreciate some feedback either on or off list please, as to how other people might be tackling this same problem. > > Cheers > _______________________________________________ > freebsd-isp@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-isp > To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org" >