From owner-freebsd-questions@FreeBSD.ORG Thu Apr 5 18:24:28 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 33F2F16A402 for ; Thu, 5 Apr 2007 18:24:28 +0000 (UTC) (envelope-from derek@computinginnovations.com) Received: from betty.computinginnovations.com (dsl081-227-250.chi1.dsl.speakeasy.net [64.81.227.250]) by mx1.freebsd.org (Postfix) with ESMTP id CF13D13C458 for ; Thu, 5 Apr 2007 18:24:25 +0000 (UTC) (envelope-from derek@computinginnovations.com) Received: from p28.computinginnovations.com (dhcp-10-20-30-100.computinginnovations.com [10.20.30.100]) (authenticated bits=0) by betty.computinginnovations.com (8.13.8/8.12.11) with ESMTP id l35INYqE016592; Thu, 5 Apr 2007 13:23:35 -0500 (CDT) Message-Id: <6.0.0.22.2.20070405131910.024eedd8@mail.computinginnovations.com> X-Sender: derek@mail.computinginnovations.com X-Mailer: QUALCOMM Windows Eudora Version 6.0.0.22 Date: Thu, 05 Apr 2007 13:23:12 -0500 To: "Jonathan Horne" , freebsd-questions@freebsd.org From: Derek Ragona In-Reply-To: <56576.192.168.125.142.1175794565.squirrel@webmail.dfwlp.or g> References: <56576.192.168.125.142.1175794565.squirrel@webmail.dfwlp.org> Mime-Version: 1.0 X-ComputingInnovations-MailScanner-Information: Please contact the ISP for more information X-ComputingInnovations-MailScanner: Found to be clean X-ComputingInnovations-MailScanner-From: derek@computinginnovations.com X-Spam-Status: No Content-Type: text/plain; charset="us-ascii"; format=flowed X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Subject: Re: slightly OT - my freebsd email topology X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Apr 2007 18:24:28 -0000 At 12:36 PM 4/5/2007, Jonathan Horne wrote: >currently, my email server is just a single box, accepting and sending emails >from and to the internet. spamassassin and sendmail, and so far, it works >satisfactory. > >i would like to change it up, so that i have a pair of servers doing MX >from the >internet, which then passes to an internal server for delivery. if i do >that, i >could remove spamassassin from the internal server, and run it on just the 2 >external. all those configurations is really not my issue here... what im >really pondering is how would external servers that are seperate from >where the >target mailboxes are, know which addressess are acceptable and which to >return a >550? > >does anyone have any setups that are similar to this, and could advise me or >point me in the right direction? > >thanks, >jonathan Generally you want to filter and bounce mail at the point of origin, so your mail server that first accepts the mail. As long as you have the bandwidth on that server you would spam check, virus check there, bouncing any bad ones. Then forward to your internal server only clean mail for delivery. However unless you have terribly underpowered servers, or a lot of email (like >50,000 messages a day) running on two servers should not be necessary. -Derek -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support.