From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <3F74599D.1010004@acm.org>
From: "D. Brownlee" <brownlee@acm.org>
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To: 9fans@cse.psu.edu
Subject: Re: [9fans] ISP filtering - update
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Date: Fri, 26 Sep 2003 08:22:05 -0700
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Is there an analogy here:

We have the post office and several alternate
carriers, like UPS and FedEx. They all use
the same infrastructure to make deliveries:
roads, bridges, etc., but the trucks, offices
and employees are different.

Where is the separation with email?
It seems that all the email carriers use
some of the same infrastructure, like
cables, satellites and networking equipment,
but is software part of that infrastructure? SMTP?