Why every day lots of mail arrive from users in mailing lists trying to go out from a list? well they could have this own reasons and I think that's ok however why they send mails in the body with "unsuscribe", "unsubcribe", "unsusbcribe" and others? There is one way to unsusbcribe only and they cannot see or are they too lazy to read three or four lines?

Users, I'll never understand you :-)