From:	"Anthony.Appleyard" <MCLSSAA2 AT fs2 DOT mt DOT umist DOT ac DOT uk>
Organization:	Materials Science Centre
To:	DJGPP AT DELORIE DOT COM
Date:	Tue, 15 Apr 1997 08:44:32 GMT-1
Subject:	Spam
Reply-to:	Anthony DOT Appleyard AT umist DOT ac DOT uk
Message-ID:	<10891E642F7@fs2.mt.umist.ac.uk>

  S DOT P DOT  AT delorie DOT com, Woodring <datamax AT j51 DOT com> wrote:-
> Do you have a car? Do you like music on the go? Have you given any thought
> about upgrading the car stereo system? ...

  There is an email group called Techdiver that got so pestered with spam that
now they do this:-
  User X sends a message to techdiver.
  Techdiver bounces the message to X's apparent email address, with an
instruction to send back within 2 days or so a special instruction authorizing
the message, with a serial number which varies unpredictably between messages.
  User X sends that authorizing message, with the serial number statedq as a
parameter.
  Techdiver THEN circulates the message.

This eliminates all spammers etc who put false From: addresses on their
messages.

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