[ 源代码： spamoracle ]
软件包：spamoracle（1.4-15 以及其他的）
statistical analysis spam filter based on Bayes' formula
SpamOracle, a.k.a. "Saint Peter", is a tool to help detect and filter away "spam" (unsolicited commercial e-mail). It proceeds by statistical analysis of the words that appear in the e-mail, comparing the frequencies of words with those found in a user-provided corpus of known spam and known legitimate e-mail. The classification algorithm is based on Bayes' formula, and is described in Paul Graham's paper, A plan for spam.
This program is designed to work in conjunction with procmail. The result of the analysis is output as an additional message header X-Spam:, followed by yes, no or unknown, plus additional details. A procmail rule can then test this X-Spam: header and deliver the e-mail to the appropriate mailbox.