Spam marked as BAYES_00

[mcesari]

I see that a lot of spam messages on my system are coming though as BAYES_00
Most of these are obviously spam, so I do not see how it could get the BAYES_00 score.

What can I do to debug or retrain to fix this problem?

I have read a few posts about this but they all seem to be for older versions and do not apply to me.

we are running 5.0.9

[nrc]

Make sure that your spam training accounts are setup and working. Information is in the Wiki along with information on how to feed the contents of a folder to the spam training process. You can collect some spam in a folder and feed it to zmtrainsa to kickstart the spam training process.

Zimbra MTA - Zimbra :: Wiki

[mcesari]

I have go through all the wiki pages about spam and as far as I can tell zmtrainsa is working fine. sa-learn does not display any errors and displays some results when I tell it to display the bayes data.

A lot of spam messages do get marked correctly with BAYES_99 but a lot also get BAYES_00
It just seems like something is off, but as far as I can tell everything is working correctly.