[Mailman-Users] Unsubscribe link on msg_footer

Hi list, I would place in email footer the link to give possibility to the user to unsubscribe (possibly directly, without insert the password)

I try to do this adding in msg_footer the following Unsubscribe: %(user_optionsurl)s?password=%(user_password) s&unsub=1&unsubconfirm=1

but Mailman (2.1.11 on Debian Lenny) said me that I can't use user_optionsutl in this variable

There is any other way to do this?

Thank you