Sorry EE a little brain dead today, hope this one is simple:
Have an email server in lan. Have a windows network with a dns server in lan. Probably incomplete dns set up on server. Outside of lan, public dns for email server works fine, inside the lan, no dice. The email server is in the lan but not joined to the domain (an exchange clone.)
How to finish the dns set up so that when in the lan, public dns record resolves as it does when outside the lan?