security issue and strange things adding host header

Hi

I was playing around with the "adding host header" feature.

Why does it add also a DNS zone when adding a hostheader? I would think this is a feature that makes sense if you have DNS somewhere else and want your website to awnser also to a DNS record pointing into the server from else where?

Whats the idea and difference between adding a hostheader and parking a domain?

In anycase there are some serious issues with this. I was testing on a domain "mydomain.com" and added the header "tempurl.someotherdomain.com"

Now strangely it has some different not so nice effects.

1. it creates a DNS zonefile for the domain
2. it creates a header not only for the subdomain but actually also for the 2. level domain
3. the zone it created does not actually have any infromation about the 3. level subdomain I wanted to create

so since 3) doing 1) really has no effect and adds to the question "why create the zone file". why ask me what I want if You are still adding things I dont want - the 2) part and because of 1) you are also potentially doing a LOT of harm creating zones that are NOT hosted at all maybe by the hosting provider.