Re: Conversations with an Ethernet watcher

Mark Crispin (MRC@SIMTEL20.ARPA)
Fri 7 Feb 86 00:07:50-MST

Add my voice to the clamor -- it is a bug or misfeature that Berkeley Unix
has multiple simultaneous SMTP streams to the same host. SMTP is a batching
type process and overall mailer throughput is more important than the small
gains some messages may gain from multiple streams.

It really nailed SUMEX badly that the nastygrams that hit its SMTP server
came from a Berkeley Unix SMTP mailer. I tried opening multiple listeners
(a listener just negotiates SYNs then hands the connection off to the server...
normally a very fast task) and the damn host just went and grabbed the new

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