Benny,

Please see http://www.logsat.com/spamfilter/forums/showmessage.asp?messageID=4620 for an explanation.

Roberto F. LogSat Software

Kriss, In average spam messages are 5-20 times more that good messages. Our own corpus.ini file looks like this:

[Messages] Spam=9105146 Good=559984

We receive 20x more spam than good emails. Still, under these conditions, during the past 3 days we blocked 100,000 emails using MAPS filter, 90,000 using blacklisted countries, and only 1,000 using Bayesian filtering.

Being in yours and Benny's case spam and clean counts so close, it may be hard for the statistical filter to accurately determine what is spam and what is not. If you wish we can try emailing you our own corpus database to see if it makes a difference.

Roberto F. LogSat Software