 guido takers how is esr s bogofilter packaged spamassassin the perl bayes filter advertised on slashdot wrt the last it s a small pile of windows exe files along with cygwinNUMBER dll the exes are cmdline programs one is a popNUMBER proxy if i currently have an email server named say URL with user name timmy then i change my email reader to say that my server is NUMBER NUMBER NUMBER NUMBER and that my user name on that server is URL timmy in that way the proxy picks up both the real server and user names from what the mail reader tells it the user name is this is an n way classifier like ifile that way and all it does is insert a x text classification one_of_the_class_names_you_picked header into your email before passing it on to your mail reader the user then presumably fiddles their mail reader to look for such headers and do something about it and even outlook can handle that much wink the user is responsible for generating text files with appropriate examples of each class of message and for running the cmdline tools to train the classifier 