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.