From owner-freebsd-isp@FreeBSD.ORG  Fri Jul  7 15:08:43 2006
Return-Path: <owner-freebsd-isp@FreeBSD.ORG>
X-Original-To: freebsd-isp@freebsd.org
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 529CE16A4DD
	for <freebsd-isp@freebsd.org>; Fri,  7 Jul 2006 15:08:43 +0000 (UTC)
	(envelope-from b.candler@pobox.com)
Received: from rune.pobox.com (rune.pobox.com [208.210.124.79])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 0F80E43D6D
	for <freebsd-isp@freebsd.org>; Fri,  7 Jul 2006 15:08:34 +0000 (GMT)
	(envelope-from b.candler@pobox.com)
Received: from rune (localhost [127.0.0.1])
	by rune.pobox.com (Postfix) with ESMTP id D83AB79CE6;
	Fri,  7 Jul 2006 11:08:55 -0400 (EDT)
Received: from mappit.local.linnet.org (212-74-113-67.static.dsl.as9105.com
	[212.74.113.67])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by rune.sasl.smtp.pobox.com (Postfix) with ESMTP id 648F878A41;
	Fri,  7 Jul 2006 11:08:53 -0400 (EDT)
Received: from brian by mappit.local.linnet.org with local (Exim 4.61
	(FreeBSD)) (envelope-from <b.candler@pobox.com>)
	id 1FyrwT-0009XV-BF; Fri, 07 Jul 2006 16:08:29 +0100
Date: Fri, 7 Jul 2006 16:08:29 +0100
From: Brian Candler <B.Candler@pobox.com>
To: Francisco Reyes <lists@stringsutils.com>
Message-ID: <20060707150829.GA36657@uk.tiscali.com>
References: <cone.1152240742.658037.2598.1000@zoraida.natserv.net>
	<20060706235712.A1171@ganymede.hub.org>
	<20060707121846.GA36201@uk.tiscali.com>
	<cone.1152284622.729752.18477.1000@zoraida.natserv.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <cone.1152284622.729752.18477.1000@zoraida.natserv.net>
User-Agent: Mutt/1.4.2.1i
Cc: FreeBSD ISP <freebsd-isp@freebsd.org>, User Freebsd <freebsd@hub.org>
Subject: Re: IAMP servers in FreeBSD for ISP
X-BeenThere: freebsd-isp@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Internet Services Providers <freebsd-isp.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-isp>,
	<mailto:freebsd-isp-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-isp>
List-Post: <mailto:freebsd-isp@freebsd.org>
List-Help: <mailto:freebsd-isp-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-isp>,
	<mailto:freebsd-isp-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 07 Jul 2006 15:08:43 -0000

On Fri, Jul 07, 2006 at 11:03:42AM -0400, Francisco Reyes wrote:
> >Remember that Courier has a proxy front-end built in, so you can use a 
> >proxy
> >cluster instead of an NFS cluster (or even have some accounts on Courier 
> >and
> >proxy others to Cyrus; a very nice migration tool)
> 
> We tried the proxy once.. but the proxy machine was keeping an instance 
> running during the connection. Basically we saw a connection on the proxy 
> machine and another in the destination machine. Not sure if this is how it 
> is supposed to work or if we missconfigured.

You will see a process running on the proxy machine for the duration of the
connection; all it is doing is copying messages back and forth. There will
be one process per connection, and this is how it's supposed to work.

A process in the process table is not particularly expensive, and its RAM
usage should be very low; however I'd agree that a single-process threaded
proxy would be cheaper.

> >although Courier's sqwebmail has a not particularly pretty interface, it
> >*does* perform very well under heavy usage
> 
> Even with Inbox with large number of files?
> Say 5,000+

Most users had a 10MB quota :-) We also bounced incoming mail for mailboxes
which had not been logged into for 6 weeks.

Regards,

Brian.