samba - Dec 2012 - Samba 4 AD DC builtin DNS / samba-tool dns add reverse zone entries / DNS Remote Management on an Win2kR2 Server

Hi,

By accident i did something like this via an scrip to populate an 
reverse zone.

~# samba-tool dns add server 200.168.192.in-addr.arpa 1.1 PTR test.gsg.local

And indeed that record was added successfully and even showed up on the 
DNS Remote Management on an Win2kR2 Server like this
192.168.200.1.1    PTR test.gsg.local

Good thing the record can be deleted but i guess it should not be 
possible to create such an record.

Beside that the DNS Remote Management shows alot of grey folders labled 
with machine names on Forward Lookup Zones. Folders like _sites, 
ForestZones, DnsZones are also affected. Is this normal behaviour or 
should i be concerned about this.

Thanks in advance
Achim Gottinger