Hmm.. the Morris worm of 1988. What are the other 2?
Piers Dick Lauder and Bob Kummerfeld implemented Mail/sendfile *(_at_)*
(yes, wildcards both sides of the user(_at_)host name form) in ACSnet prior
to this. It was designed to be used amongst other things, to do s/w updates
to all ACSnet subscribers. And it worked over IP as well as an applications
layer over TCP/IP, gated into sendmail.
The one time I saw them use it, it killed my sendmail by n->n*m explosion
of outbound mails. And as soon as I deleted one from mqueue, another 20
came in.
Mike Lesk claimed UUCP was invented for similar reasons and I seem to recall
some more than proof of concept uux methods to re-create forwarding data but
thats probably never been exploited in an IP network.
Then there are the checkgroups message flows in News...
cheers
-George
--
George Michaelson | DSTC Pty Ltd
Email: ggm(_at_)dstc(_dot_)edu(_dot_)au | University of Qld 4072
Phone: +61 7 3365 4310 | Australia
Fax: +61 7 3365 4311 | http://www.dstc.edu.au