DNS Server

hello i got EHCP installed on my server.

A question if i add domains
i am not able to look them via internet.
i setted my dns server to localhost.
but i think i have to change him but to what?
[
Your dns/server ip is set as:localhost, if it is not detected/set correctly, please set it in your ehcp db, or use this link
]

Greetz,
Ricardo Farina