I'm the admin with basic knowledge of Exchange currently working at a branch office in an Organization with two main branches/sites in different cities, Site A(172.16.0.0/16) and Site B (172.18.0.0/16) both in an AD Domain "abc.com".
I'am currently working at Site B which is part of an AD Domain "abc.com", whose Forest Root Domain is at Site A. Site A has an Exchange server handling emails only for users in Site A "alias@abc.com"......Due to the nature of business at Site B, we have 3 internet domains "efg.com, xyz.com and jkl.com" used for emails which are running on a Linux box.
My requirement is to move away from the Linux environment at Site B to and deploy and Exchange server (joined to the "abc.com" AD Domain) but handling emails for "efg.com, xyz.com and jkl.com" internet domains.
How can i achieve this. Thank you