[opensuse] How do I get off this list?

I know that the answer should be to send a message to opensuse+unsubscribe@opensuse.org, but I've done that several times now and it hasn't worked. The "help" address doesn't respond with anything either. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org