unsubscription not working

Trying to unsubscribe from the list, send the email and get this response: 'Acknowledgment: The address tinmachin3@googlemail.com was not on the php-general mailing list when I received your request and is not a subscriber of this list.' Where I'm sure that is the address I'm subscribed with. -- Luke Slater :O) this text is protected by international copyright. it is illegal for anybody apart from the recipient to keep a copy of this text. dieser text wird von internationalem urheberrecht geschuetzt. allen ausser dem/der empfaenger/-in ist untersagt, eine kopie dieses textes zu behalten.