[Copfilter] Copy of quarantined email - *** SPAM *** [8.9/8.0] Bayes spam and ham out of proportion

["babedh-dhra@biggdog.biz" <ba...@biggdog.biz>]

I've been running spamassassin for years.  I am using auto-learn with very
conservative thresholds.  However, after several years of usage my spam
database is about three time larger than my ham database and I am starting
to see false positives.

Is there a way how to "shrink" the spam database?

Thanks
Frank

-- 

<fe...@chem.toronto.edu>