Quote from http://blog.verwilst.be/2008/12/11/improving-spam-filtering-on-zimbra-5x-with-dspam/ By default, Zimbra isn’t very good in the spam-handling dept. You just keep on flagging messages as Junk, in the hopes that Zimbra is getting wiser on every occasion. Not really though.. Under the hood, Zimbra is relying on SpamAssassin to weed out the pharma mails. This heuristics-based method is pretty 90’s … Continue reading How to enable Dspam on zimbra 5.0.18