Spam Corpus size and false positives?

[Max Kipness]

Hi,
 
Here is the size of my spam/ham corpuses:
 
bayes corpus size: nspam = 15538, nham = 9517
 
I had my bayes threshold seeting to 7, which may have been a bit low,
and I'm seeing some false positives. I've now raised the auto-learn
threshold to 12.
 
Is there anything else I can do correct the bayes analysis and get it
not to tagged so much at 99%? Or is feeding ham the only way. This is
hard for me to do, as another guy and myself are the only ones that
really feed it.
 
I've thought of rebuilding the databases but with a higher auto-learn
threshold, but this would allow in a flood of spam, right?
 
Thanks,
Max

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