Greetings. I now understand that new Exchange Certs (3rd party) will not include internal network names (only public FQDN names).
This is our current configuration (from Exchange Admin MMC):
Outlook Web App is correct (Internal and External)
Exchange ActiveSync is partially correct (Internal is .Local Name, External is Correct)
Offline Address Book is partially correct (Internal is .Local Name, External is Correct)
Exchange Control Panel is correct (Internal and External)
Receive Connector (Client) is incorrect (Uses .Local Name)
Our correct external URL is: mail.our_company.org
I'm pretty sure I understand how to change all these, but the "Split DNS" confuses me a bit. We already have "Internal_Doman.LOCAL" as a forward lookup zone in DNS. However, it is AD Integrated. From what I've read, I need to create a new forward zone that is *not* AD Integrated, correct ? Name it anything I want ? Domain name will be the internal mail host ? (Server_Name.LOCAL) And create a single A record with the external mail server name, yes ?
Also, from above it looks like I just need to update EAS, OAB, ECP and the Receive Connector, yes ? I don't have a "default" receive connector, just the "Client" one.