I've found a few articles about ZCS' anti-spam and its filters per user but some are old and others unclear.
This bug seems outline exactly what I want to know:
Bug 3870 – per user Spam Assassin score
"I would definitely want the user to be able to mark items they consider "spam"
for themselves, and have that modify their individual score. A Target ad that
Joe thinks is spam may be something Susie wants and does not consider spam. I
think there should be a way for Joe to classify to (train) the system that
this is spam, which would modify his score. Susie would not mark it as spam
and would continue to get the email. Just allowing a user to modify the
thresholds does not give the same flexibility as allowing them to score
individual items that will apply only to them. That allows them to tailor the
spam software and its results to them."
Would anyone be able to tell me if ZCS allows users to teach their own spam bayes db about which mail he/she considers spam/ham?
Currently we use a global anti-spam system where everyone contributes towards spam learning and it ends up being a tug of war. One person thinks an email is spam and another considers it not spam which just confuses spamassassin.
Thanks for any comments in advance