Here is the entire situation:
Comapany 'A' (DKSJ) on SBS server using dksj.net as local domain. Mail hosted locally on exchange server. MX records directed to mail.global.frontbridge.com (spam filtering)
Company 'A' (DKSJ) changing name to Company B (DSJ)
new mail accounts needed for Company 'B' for existing users of Company 'A'
company 'A' account will no longer be needed (Phased out). Only need to make sure mail sent to old domain accounts is recieved by existing users on new accounts.
We've already purchased new domain name and enabled new domain on M.S. Forefront (formerly Frontbridge).
local domain will remain Company 'A' dksj.net only because changing domain name on local server is too complicated. (do not want to reinstall operating system).
What is the proper way to accomplish this?