I'm running a VPS with several domains. While trying to setup a forum on one of these domains I created a subdomain nop.raadvanarbeid.nl. Now, this subdomain is giving me a headache since it sometimes works, sometimes it does not. But when I accidentally typed pop.raadvanarbeid.nl I was taken to the homepage of another user (www.floorabbestee.nl). The same goes for all my other domains on this server. When I put 'pop.' in front of the domainname I'm taken to the homepage of floorabbestee.nl (pop.lastpost.tv, pop.kade85.nl, pop.kade85.com etc).
Where do I start to resolve this?
Where do I start to resolve this?