Alistair McDonald.
IT consultant living in the UK. Experienced C++ and Perl developer (plus lots of other stuff too). Helped to develop anti-spam products and services for [http://www.inrevo.com/antispam.html InRevo Ltd] and then wrote up his experience: BooksAboutSpamAssassin.
If you want to get hold of me, email me at spamassassin@inrevo.com (I'm not afraid of spam; I use the best open-source tool to protect me) (AlistairMcDonald)