From B2evolution

[edit] The SpamAssassin plugin

This plugin allows you to use SpamAssassin to get Spam karma for comments.

[edit] Location

The SpamAssassin plugin's source is hosted in the PluginsRepository at: http://svn.sourceforge.net/viewcvs.cgi/evocms-plugins/spamassassin_plugin/

[edit] Requirements

This plugin requires b2evolution 1.8 or later.