This screen shows you the current SpamAssassin configuration. To change the settings, click the Edit button.
SpamAssassin is a mail filter to identify spam. Using its rule base, it uses a wide range of heuristic tests on mail headers and body text to identify spam.
Depending on the results of tests the SpamAssassin assigns a certain score to an e-mail. The greater a score - the more suspicious an e-mail.
The Spamassassin does not delete or reject any of your e-mails. It just filters it and helps sorting it.
For more details, please refer to the SpamAssassin website.