I've recently found a referrer in the apache log on my site. Now, I opened it out of curiosity, since my site is live, but I just started development so I didn't expect it.
Anyway, the site was a pure copy of mine, and after investigation I saw that it resolves to my IP.
I'm on Ubuntu 12.04, Apache 2, drupal 7, don't know what other info can I provide.
My question is: how can I tell apache that it should not serve this site?
Edit: forgot to say that I had some bots register to my fresh drupal installation. Also, my domain is a tld, this fake domain is a third level (ie. sub.domain.de)