configuring spamassassin

[Matthew Broadhead <ma...@nbmlaw.co.uk>]

sorry if this question is a bit vague but i am currently unable to ssh 
into my server to get more info.  i am using centos 7 and i have set up 
spamassassin training by scanning messages which are moved into or out 
of the junk folder.  it seems to work ok because database entries are 
being created in the mysql database.  however it seems to have little or 
no effect on the amount of spam coming through.  is it possible it is 
training but not actually using the training data during the scanning?
also i think it was set up to train separately for each individual user. 
  it seems like having common training where everyone's emails are 
scanned using the same bayes data would be more logical as all the email 
users are in the same business.  is this just a matter of setting a 
flag?