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Date: Fri, 07 Jul 2006 13:45:52 -0700
From: Darren Pilgrim <darren.pilgrim@bitfreak.org>
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To: Francisco Reyes <lists@stringsutils.com>
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Cc: FreeBSD ISP <freebsd-isp@freebsd.org>
Subject: Re: IAMP servers in FreeBSD for ISP
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Francisco Reyes wrote:
> Darren Pilgrim writes:
> 
>> FWIW, Courier-IMAP 4 has a proxy feature wherein a single front-end 
>> IMAP server hands does the inital authentication, then determines the 
>> server handling the account and invisibly hands off the connection.
> 
> We tried that. The proxy did not seem to "hand off" the connection.
> Instead for each connection there was one process running in the proxy 
> and another on the actual machine doing the actual serving.
> 
> So if we had
> Machine A as proxy.
> 
> Machine B doing work
> 
> Machine C doing work.
> 
> We saw that if 500 connections came to B and 500 to C... there would be 
> 1000 connections on A.
> 
> Is that how it's supposed to work or perhaps we didn't configure it 
> properly?

That's exactly how it's supposed to work.  After the initial 
authentication, A isn't doing any real work, just passing packets 
between the client and the backend server.

-- 
Darren Pilgrim