unsubscribe request

I know this is going to seem like a request from a clueless wanna, 
but I've sent repeated requests to www-proxy-request to unsubscribe 2 
potential addresses (which are being forwarded to this address):


I did try www-proxy-owner, but got the dreaded "user unknown" 
message.  I'm hoping the list admin subscribes to this list, so that 
s/he can straighten this out.

TIA, whoever you are.

Jim Carroll