Is it possible to have my server throw an error of some kind when "anyhost.mydomain.tld" is used? I'm using dyndns, and to my knowledge it needs to have wildcard DNS active for it to work(?), but now any domain name that's not been registered on my servers DNS redirects to the "This IP address is shared." page. Is there any way to stop this short of registering every imaginable co-domain? I'd like to avoid having to maintain an .htaccess file if at all possible. Sorry, about the title. I really can't think of a better one, but if anyone else can, please let me know.