From owner-freebsd-questions@FreeBSD.ORG Wed Feb 8 17:08:54 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org 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 5671916A422 for ; Wed, 8 Feb 2006 17:08:54 +0000 (GMT) (envelope-from bill@celestial.com) Received: from mail.mi.celestial.com (dagney.celestial.com [192.136.111.7]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9E2C843D45 for ; Wed, 8 Feb 2006 17:08:53 +0000 (GMT) (envelope-from bill@celestial.com) Received: from localhost (localhost [127.0.0.1]) by mail.mi.celestial.com (Postfix) with ESMTP id B826D1E479; Wed, 8 Feb 2006 09:08:52 -0800 (PST) Received: from mail.mi.celestial.com ([127.0.0.1]) by localhost (alexis.mi.celestial.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 87869-02; Wed, 8 Feb 2006 09:08:52 -0800 (PST) Received: by mail.mi.celestial.com (Postfix, from userid 203) id 46F1C1E3FA; Wed, 8 Feb 2006 09:08:52 -0800 (PST) Date: Wed, 8 Feb 2006 09:08:52 -0800 From: Bill Campbell To: freebsd-questions@freebsd.org Message-ID: <20060208170851.GA90120@alexis.mi.celestial.com> Mail-Followup-To: freebsd-questions@freebsd.org References: <20060207222202.GA8604@math.jussieu.fr> <43E9B39B.2070507@locolomo.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <43E9B39B.2070507@locolomo.org> User-Agent: Mutt/1.4.2.1i X-Virus-Scanned: amavisd-new at mi.celestial.com Subject: Re: Large imap server. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd@celestial.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Feb 2006 17:08:54 -0000 On Wed, Feb 08, 2006, Erik Norgaard wrote: >Albert Shih wrote: >>I search some advice for large imap server. >> >>For me large is : 1000 users with 1 Go mails for each users. And every >>users check by imap/pop those mail every 2 or 3 minutes. >> >>What's the «best» imap server ? Cyrus Imap or Courier-Imap ? (please this >>is not a troll). >> >>Any documentation ? > >AFAIK cyrus-imap uses a database backend to store mail and has been >designed to scale to enterprise systems. The database backend makes >indexing and mail lookup faster, but I don't think there's any >difference when it comes to retrieving the actual mail. Cyrus scaling? Perhaps on one mongo server. We have installed multiple servers with courier-imap delivering and serving pop and imap from a central server housing home directories, and have seen essentially linear performance as servers are added. One can index mail stores with something like glimpse, but that's probably an issue only were there are huge numbers of messages in individual folders. Bill -- INTERNET: bill@Celestial.COM Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 A child can go only so far in life without potty training. It is not mere coincidence that six of the last seven presidents were potty trained, not to mention nearly half of the nation's state legislators. -- Dave Barry