Re: [Asrg] 0. General - Inquiry about CallerID Verification

["Eric S. Raymond" <esr@thyrsus.com>]

Bill Cole <asrg@billmail.scconsult.com>:
> At 11:05 PM -0500 11/29/03, Eric S. Raymond wrote:
> 
> >This is is a viable approach because there are so many fewer semding 
> >servers (concentrated at ISPs) than receiving servers.
> 
> What is your basis for this?

Well, for starters, the fact that people connected to AOL (which, last
I read, was still about 1/3rd of Internet users even America) never
originate their own SMTP transactions.  Also true of most Yahoo users
and most Speakeasy users.
 
> There are far more non-ISP servers (sending and receiving servers) 
> than there are ISP servers. ISP's carry the most volume and have the 
> most users, but in a head count of machines intentionally and 
> actively running MTA's, they hold a minority.

You may be right -- but even if you are, what I was really arguing is that is
we have a choice between technology that requires us to fix all the
world's senders and technology that requires us to fix all the world's
receivers,  fixing *senders* is a much easier deployment problem.
-- 
		<a href="http://www.catb.org/~esr/";>Eric S. Raymond</a>

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