How to silence spam or unwanted email from email-lists with Procmail?

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http://unix.stackexchange.com – I joined an email-list. I found it low-quality and I don't have time to follow their discussions. Then I informed the head to remove my email but they haven't done it. How can I can silence their emails with Procmail? It is some sort of email-list Envelope-to:[email protected] They send it from [email protected] How can I silence them, i.e. not to get their emails to fill my mailbox, not to bother me with their emails? :0: * ^FROM:.*@edistyspuolue.fi * ^TO:[email protected] /dev/null (HowTos)