David wrote:

....
> 'Unsubscribe' request denied.
> Your request was rejected for the following reason:
> 
> You are not on the list 'comp.lang.ruby'.
....
> If I am not on the list, why do I still receive e-mails???????

Do you have, or have you had, multiple email accounts forwarding to one 
account? Make sure that your From: email address is the same as the email 
address that the list archive is sending to.

--- SER