Ok thanx for replaying .. but I asked a wrong question ..
So I wil ask in another waj
if i have a doman xxx.com
and a lot of su domain
an thej are bind to the same ip adress or diferent no mether .. but those ip's ar visible to the DMZ
my problem is that that i have a setup like this
xxx.com -> my primary domain ( it is attachet to the WAN ip address )
lan.xxx.com -> my internal domann ( here is the problem How can I hide or disable this doman from being listed .?? This is for my internal ip range Ig. 192.168.0/24)
Ok i think it is ok now ..
PS I AM NOT A SPAMER . I just want to protect my internal network so that just any freeak whitch writes down nslookup and ls -d an my internal doman sees ip's of my pc ... ( bad sentens .)