> but not coming under linux domain
What are you doing to test that?
Which guide are you following to set this up in linux? Please note that bind dns is not the same as active directory as in sofar as it does not allow clients to login. Bind dns is only hostname <-> ip translation.
You could use samba + openldap to install domain controller services on the linux server:
http://www.howtoforge.com/openldap-s...ler-ubuntu7.10
The windows client can than authenticate and login to a domain on the linux server.