To: djb@koobera.math.uic.edu (D. J. Bernstein)
cc: drums@cs.utk.edu
Subject: Re: proposed agenda for 8 March WG meeting 
In-reply-to: Your message of "05 Mar 1996 07:17:44 GMT."
             <19960305071744.3858.qmail@koobera.math.uic.edu> 
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Date: Tue, 05 Mar 1996 00:58:37 -0800
From: michael.derrico@software.com (Michael D'Errico)
Message-ID: <19960305085840.AAA18689@rome.software.com>

> I meant exactly what I said: except in extreme circumstances, good MTAs
> can achieve much lower latency with separate SMTP connections than with
> multiple RCPTs. sendmail can't, but my MTA, qmail, can and does.

Your mostly-unused 10 Mbps LAN is probably not a good testbed for your 
theory.  It's much easier to saturate a T1 line, especially when it's shared 
with a WWW server handling several hundred thousand hits a day.

PIPELINING is the solution for latency problems in SMTP.  It requires fewer 
round trips than plain-old-SMTP, and is a big improvement even in the case of 
a single recipient.  I suggest you focus your energy on implementing it.

Mike