From owner-freebsd-isp Wed Mar 19 17:32:44 2003 Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7A49437B401 for ; Wed, 19 Mar 2003 17:32:43 -0800 (PST) Received: from mgw1-out.MEIway.com (mgw1.meiway.com [212.73.210.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9AAFE43FDF for ; Wed, 19 Mar 2003 17:32:42 -0800 (PST) (envelope-from LConrad@Go2France.com) Received: from VirusGate.MEIway.com (virus-gate.meiway.com [212.73.210.91]) by mgw1-out.MEIway.com (Postfix Relay Hub) with ESMTP id 3BE68EF9C6 for ; Thu, 20 Mar 2003 02:16:59 +0100 (CET) Received: from localhost (localhost.meiway.com [127.0.0.1]) by VirusGate.MEIway.com (Postfix) with SMTP id 0C73F5D009 for ; Thu, 20 Mar 2003 02:36:25 +0100 (CET) Received: from mail.Go2France.com (ms1.meiway.com [212.73.210.73]) by VirusGate.MEIway.com (Postfix) with ESMTP id C39935D008 for ; Thu, 20 Mar 2003 02:36:24 +0100 (CET) Received: from tx0-go2france-c.Go2France.com [24.242.169.51] by mail.Go2France.com with ESMTP (SMTPD32-6.06) id AEA79390106; Thu, 20 Mar 2003 02:51:35 +0100 Message-Id: <5.2.0.9.0.20030319184158.02da2ba8@mail.go2france.com> X-Sender: LConrad@Go2France.com@mail.go2france.com X-Mailer: QUALCOMM Windows Eudora Version 5.2.0.9 Date: Wed, 19 Mar 2003 19:32:29 -0600 To: freebsd-isp@freebsd.org From: Len Conrad Subject: Re: Maximum recommended user limits on mail server In-Reply-To: <20030319140557.GA16125@wjv.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org >A person I know is looking to have a mail server with 10K-15K >accounts and 50 virtual domains. >Any pointers to references or a quick summary of your server >for systems which match the above would be appreciated. You've got some good pointers on the mailbox servers, but nobody talked about an multi-box architecture, which is the key to scaleability and reliability. 1. dedicated box as SMTP gateway. 2. dedicated AV box 3. mailbox server, muchly liberated because no anti-mail abuse, no DNS query delay, no retrying of delayed mail, no AV scanning, and 50+% of the inbound mail rejected at the envelope by 1. The performance key to all three is, given enough RAM to avoid all swapping, in disk i/o. With separate controllers+disks for logging, mailqueue, and mailbox storage. And you need RAID (internal redundancy) only on boxes where you can't have external redundancy (the MX boxes done't need RAID). and RAID1 not RAID5. Len To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message