On my Firewall/Router server I also have Apache running. Everything works fine, except one thing...

I noticed a weird behaviour. When I enter any non-existing URL in a clients's browser(www.doesntexist.com, .org, .net...), Apache delivers my own home page

If I use 'host www.doesntexist.com' on the server, result is 'host not found'. It looks like the problem lies with the Apache configuration.

Does anyone know what could trigger this behaviour ? Why does Apache feel it has to do that ? I've looked for answers , but no luck... Thanks

P.S. I don't have DNS installed

That doesn't seem like apache would have anything to do with clients redirecting to your server if a non-existent url is typed in. That's a DNS or network problem most likely.