redirect to 404 wildcard subdomain

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http://serverfault.com – I setup a wildcard A record on my domain registrar. Now if a user access a missing subdomain on my domain, they will be redirected to the homepage. Currently my initial setup was this: <VirtualHost *:80> ServerAdmin webmaster@localhost RewriteEngine On RewriteRule ^(.*)$ http://domain.com$1 [R] DocumentRoot /var/www <Directory /> Options FollowSymLinks AllowOverride None </Directory> # more below... </VirtualHost> Any wildcard subdomain or if my IP is entered via URL will redirect to the homepage. Can I do something about this that will redirect (HowTos)