From owner-freebsd-isp Tue Apr 20 14: 3:25 1999 Delivered-To: freebsd-isp@freebsd.org Received: from ntserver.computronic.hu (ntserver.computronic.hu [194.149.43.67]) by hub.freebsd.org (Postfix) with ESMTP id 8019E15888 for ; Tue, 20 Apr 1999 14:03:11 -0700 (PDT) (envelope-from andras.tudos@computronic.hu) Received: from thinkpad (dhcp3.c3.hu [194.38.96.3]) by ntserver.computronic.hu (Post.Office MTA v3.1.2 release (PO205-101c) ID# 0-44403U100L100S0) with SMTP id AAA2329; Tue, 20 Apr 1999 23:01:38 +0200 Message-Id: <4.1.19990420211837.00d07100@computronic.hu> X-Sender: andras.tudos@computronic.hu X-Mailer: QUALCOMM Windows Eudora Pro Version 4.1 Date: Tue, 20 Apr 1999 23:00:14 +0200 To: "Michael R. Wayne" From: "Andras Tudos - Computronic, C3" Subject: Re: Large email installation references? Cc: freebsd-isp@FreeBSD.ORG In-Reply-To: <199904201746.NAA06139@manor.msen.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org At 1999.04.20 19:46, Tuesday, Michael R. Wayne wrote: > >Are there any good reference pointers to suggestions and issues >dealing with large (100,000+ accounts) email installations? > >/\/\ \/\/ Hi, we are at 135,000 users with the following setup: 4 frontend PCs with FreeBSD 2.2.8, Qmail, Apache and custom CGIs 1 backend SGI NFS server with RAID arrays (just because of the journaling filesystem) 1 FreeBSD based database server using Solid SQL and authenticating POP3, WWW and Radius users The system works fine, we use a hashed user directory structure, round robin DNS and hacked code all around. The most important seems to be to use as many disk drives as possible to distribute the load. We have more than thousand concurrent users at peak times now with two RAID arrays (12 drives), there was a limit at around 700 with 1 array. (This is a free email service with web, pop3 and limited dial-up access.) Andras Tudos C3, Budapest To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message