I'm not sure what the right procedure is for announcing a package, but, here goes...
SpamAssassin Package for OpenACS.
SpamAssassin is a mail filter that tries to identify incoming messages and issue a score based on how likely it is that the message is spam.
This package attempts to make the task of tweaking the filters a little easier and was inspired from php-sa project (which appears to have vanished). The documentation inside shows how to set up SpamAssassin using PostgreSQL rather than using disk based preference files.
Screenshot 1: http://daviesinc.com/openacs/sa1.png
Screenshot 2: http://daviesinc.com/openacs/sa2.png
http://daviesinc.com/openacs/apm/spamassassin.apm
