From owner-freebsd-questions@FreeBSD.ORG Mon Mar 8 09:14:53 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 69FFA16A4CE for ; Mon, 8 Mar 2004 09:14:53 -0800 (PST) Received: from destiny.chrononomicon.com (mail.chrononomicon.com [65.193.73.208]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1C25543D1F for ; Mon, 8 Mar 2004 09:14:53 -0800 (PST) (envelope-from bsilver@chrononomicon.com) Received: from [IPv6:::1] (destiny.chrononomicon.com [192.168.1.42]) by destiny.chrononomicon.com (Postfix) with ESMTP id B51271FDFF; Mon, 8 Mar 2004 12:14:40 -0500 (EST) In-Reply-To: <0A417B49F5CACA4185B7E606F349CC850CED13@sc1621.bcrail.com> References: <0A417B49F5CACA4185B7E606F349CC850CED13@sc1621.bcrail.com> Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <1B574D16-7124-11D8-B6F7-000A956D2452@chrononomicon.com> Content-Transfer-Encoding: 7bit From: Bart Silverstrim Date: Mon, 8 Mar 2004 12:14:49 -0500 To: "Wright, Greg" X-Mailer: Apple Mail (2.612) cc: freebsd-questions@FreeBSD.ORG Subject: Re: E-Mail Gateway X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Mar 2004 17:14:53 -0000 On Mar 8, 2004, at 11:25 AM, Wright, Greg wrote: > I would like to use FreeBSD (4.9) as the platform on which to run an > secure e-mail gateway. At least that is what I think I would like to > do. The reason for FreeBSD is that I much more familiar with it than > other "free" Unix like operating systems. I have worked with DEC > Ultrix, Digital Unix and AIX in the past so have some knowledge of > Unix. > > > But the real goal is to put some sort of secure mail server/forwarder > between my internal MS Exchange system and the Internet. I don't want > to connect Exchange directly to the Internet if at all possible. > > What I'm looking for are recommendations for "free" SMTP servers that I > can use for this purpose. I would like to include basic anti-virus and > SPAM control as well. Unfortunately, I have no money (other than my > time) to do this project so am looking at minimal cost products. > > Any suggestions for e-mail gateways. I've looked at postfix and qmail > but am not sure that they are appropriate. I could use the built in > sendmail, but worry about security. I'm in the middle of this kind of project right now. Using postfix-SMTP server clamav-free antivirus amavisd-new-plugin daemon that redirects mail to spamassassin and the clamd antivirus for checking Mail comes in, gets checked for viruses, and then checked and scored as spam. Quarantines things that don't pass, forwards everything else to our internal Exchange server. Postfix is a good choice for me; it's a drop in replacement for sendmail and tends to be simpler to configure. All absolutely free...we only paid for the server hardware to do this. -Bart