Unless I am missing something I can't seem to find a way to do this? We do have it setup where you have to register to even see our site but even banned users/banned IP can create a new account to view the forums (of course they can't post). We would prefer to cut off all access to these people and right now we are having to go through every new users, do an IP look up to see if they have been banned. They of course can keep doing this until they get tired of creating accounts.
Anyone know an easier way?
NOTE: We do not have mail setup on our server right now so we can't use the e-mail to verify account which would also be a big help.