Wpoison?????

[Eitan Adler]

>> There are better systems that have a pure honeypot which actually
>> accepts mail (and add the IPs that send mail to a blacklist)
>
> OK - where do we find one of THOSE?
I have never researched this topic in depth but
http://en.wikipedia.org/wiki/Honeypot_%28computing%29#Further_reading_and_external_links
seems to have some links.
Setting one up on your own isn't hard. Just create a new mail account
and blacklist anyone who sends mail to that account.