this is simply not technically feasible

It's feasible if Paul and I are willing to do the manual labor required. It just means that as many times as he creates new email addresses to add accounts from, that's how many times we have to delete the accounts.

And if he starts using some kind of scripts with which to create email accounts, we can just go to the trouble of documenting his actions and getting BellSouth to cancel his mommy's internet account, which should effectively put a stop to it for the next ten years or so (as long as he's still living with his parents).