Send all mail to junk
This may sound weird, but I get so much junk mail everyday that it is impossible to filter all of them, so I'd lie to send all messages to my junk folder while creating exceptions for people in my address list and bona fide senders. Kinda like a reverse junk filter.
Tutte le risposte (1)
The attempt to fight spam with static filters is futile. Use the built-in junk mail controls instead. https://support.mozilla.org/kb/thunderbird-and-junk-spam-messages
Note, you'll have to train the filter in order to achieve good results. So mark spam messages 'As Junk', and good messages 'As Not Junk'.