[Zope] How to unsubscribe

Hi all! As I am going to change my e-mail address, I want to unsubscribe from this list. The problem is that I can't, if I click in the link that appears at the bottom of the messages of the list (http://mail.zope.org/mailman/listinfo/zope), the other zope lists appear, but not this one (it says "no such list zope"), so I don't know how to unsubscribe... Any ideas? Igor Leturia