Problem: same mail(s) marked as spam over and over again

[netwolf]

The problem is getting more and more annoying, so I'd like to ask if there's a way to completely disable this 'automatic spam detection',
which is almost always wrong anyway, and absolutely refuses to learn anything (I marked hundreds of messages from several senders als 'Not spam', but still new mails are marked as spam...).

Other mail programs never had problems with spam detection, why is FM so 'special' about that??

Thanks a lot,
cheers