Some email clients cannot filter on email headers, only the content of the body. If yours is like that then you need to recieve your spam detection headers in the message body, to do so check the box below.

body

Based on the spam rating, you can choose to bounce* or vanish* a message before you even see it. Simply set the value below for each action, 0 means do not perform this action.

Bounce on rating

Vanish on rating

* Bounce means send a message back to the sender, letting them know you didn't get it.
* Vanish means throw the message away, sender doesn't know you didn't get it.