freebsd list admins?

[Robert Simmons]

Who is the admin for freebsd-quesitons and freebsd-security?  There seems to 
be a few email addresses that are subscribed to these lists that keep spamming 
it periodically, or in the case of freebsd-security actually don't exist and 
have a broken mailserver that sends a reponse back to the list.  The addresses 
don't seem to be changing, so would it not be easy for an admin to remove 
those addresses from the list?

I've tried sending emails to postmaster at freebsd.org about it, but I get no 
response, so I figure I'm barking up the wrong tree there.