In answer to the queries about the "LIST" message:
It's probably not secret code or a message from aliens. Rather, I think
it is yet another user confusing a list (e.g. BEE-L) with a list-server.
People often send on-line commands (e.g. SUBSCRIBE, UNSUBSCRIBE, LIST, etc.)
to lists not realizing that they should go to the servers.
Or maybe it is a message from aliens - ²Quien sabe?
Steve Clark
Vassar College