From owner-freebsd-questions@FreeBSD.ORG Wed Jan 17 14:23:17 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 EB28B16A416 for ; Wed, 17 Jan 2007 14:23:17 +0000 (UTC) (envelope-from ct.lists@qgsltd.co.uk) Received: from mailrelay2.qgsltd.co.uk (mailrelay2.qgsltd.co.uk [195.97.223.232]) by mx1.freebsd.org (Postfix) with ESMTP id 4467D13C45B for ; Wed, 17 Jan 2007 14:23:16 +0000 (UTC) (envelope-from ct.lists@qgsltd.co.uk) Received: from qgsltd.co.uk (mail.qgroup.com [192.168.0.12]) by mailrelay2.qgsltd.co.uk (8.13.6/8.13.6) with ESMTP id l0HDEhh3090214; Wed, 17 Jan 2007 13:14:44 GMT (envelope-from ct.lists@qgsltd.co.uk) X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.56 (ClamAV engine v0.88.7) Received: from [192.168.10.197] (account charlest HELO [192.168.10.197]) by qgsltd.co.uk (CommuniGate Pro SMTP 5.0.10) with ESMTPSA id 805182; Wed, 17 Jan 2007 13:51:17 +0000 Message-ID: <45AE2B0A.3090509@qgsltd.co.uk> Date: Wed, 17 Jan 2007 13:56:26 +0000 From: Charles Trevor User-Agent: Thunderbird 1.5.0.9 (X11/20070116) MIME-Version: 1.0 To: freebsd References: <000801c73a23$017bdeb0$6601880a@Enigma> In-Reply-To: <000801c73a23$017bdeb0$6601880a@Enigma> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.88.6/2459/Tue Jan 16 22:03:34 2007 on mailrelay2.qgsltd.co.uk X-Virus-Status: Clean Cc: FreeBSD Questions Subject: Re: Load balancing outgoing mail relay 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: Wed, 17 Jan 2007 14:23:18 -0000 freebsd wrote: > Hi > I have a simple question but googling does not lead to a valid/usable > answer. > I need to load balance OUTGOING emails. I have serveral smart hosts. I > need my internal SMTP server to send mail using ALL of the smart hosts > together, making some kind of load balancing (no need for wheighted one). > Someone pointed out to use a name for the smart host, and have DNS to > resolve that name to the IP of all the relays (multiple A records) but > this turned out in doing failover, not load balancing. > Anyone has a *working* idea for solving this apparently simple problem? > Thanks > > _______________________________________________ > 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" This (multiple A records) works for me, at least approximately. Both Bind and MS DNS will round robin when multiple A records exist for the same hostname. What is your setup? Charlie