I am in the process of learning about Spamassassin and Bayes. I have been doing some reading a lot of the internet, but I am not sure I am grasping something here. If someone could help me understand, that would be great.
first, I know there are many reasons why a message could or could not get trapped by a spam filter. However, I am trying to this one part out. If a clearly spam message has Bayes_00 in the header, (which means Bayes thinks the message is ham) does this mean that at one point, spamassassin/Bayes learned this message as ham either via some automatic means or by someone running sa-learn --ham on the spam message (for some unknown reason) ... If so, is there any way to know for sure it was learned as ham by Bayes? Or is that what Bayes_00 means?
Is it possible to have Bayes_00 in the header, but the message was never learned as either ham or spam? It just has Bayes_00 due to other reasons? I am not sure if I am understanding this right or even verbalizing it right. I appreciate any help in understanding.