Email - Support SPAM filtering

[simonfoilen]

https://james.apache.org/server/3/config-antispam.html

TODO:

• [ ] Add spamd service
• [ ] Add SpamAssasin configuration (to use a Baye file)
• [ ] Add SpamAssasin mailet to James

[simonfoilen]

Mailet: https://github.com/apache/james-project/blob/master/server/mailet/mailets/src/main/java/org/apache/james/transport/mailets/SpamAssassin.java

[simonfoilen]

Explore using James Bayesian analysis: https://wiki.apache.org/james/Bayesian_Analysis Code: https://github.com/apache/james-project/tree/master/mailet/ai/src/main/java/org/apache/james/ai/classic

Check how to:

• have separate corpus per user
• scan all mails in TAG-SPAM instead of using email addresses to send to (mark SPAM)
• scan all read mails not in TAG-SPAM (mark HAM)