integrate spam defense into Mailman core
Original LP Author: Sumana Harihareswara , LP Link: https://bugs.launchpad.net/bugs/1414157
Possibly integrate http://www.spambayes.org Spambayes or http://www.spamassassin.org SpamAssassin or http://pyzor.org pyzor into Mailman core.
From http://wiki.mailman.psf.io/DEV/Mailman%203.0?action=diff&rev2=30&rev1=28 -- a TODO for the Mailman 3.x series.