I'm trying to add an Exchange 2016 server to my infrastructure and to migrate everything there from an Exchange 2010 server. I'm following this tutorial: https://practical365.com/exchange-server/migrating-exchange-server-2016/
But I get stuck at the Client Access Name cutover since my DNS configuration seems to be different from the one in the tutorial.
So we've got an internal DNS server for our internal network, and an external DNS server (outside of our AD, of course) for our public addresses. But in the tutorial it seems like they're using the same domain name for internal and external purposes?
Anyway, my Outlook connects via RPC/TCP to the Exchange server using its internal name (serv-exchange.whatever.lo
cal). But I don't know where this has been configured? Can I force Outlook to use the external name (mail.mydomain.com)?
That would make the Client Access Name switch easier ... I'd just need to change the NAT on the firewall for mail.mydomain.com ... otherwise I would have to change the DNS config of the current Exchange server which would create all kinds of problems, I guess?
I've tested accessing the new Exchange 2016 server on a client with a modified HOSTS file (with serv-exchange.whatever.loc
al pointing to the new Exchange 2016 server) and that works fine! But in order to do that on the level of the internal DNS I would have to point serv-exchange.whatever.loc
al to the IP address of new Exchange 2016 server but then the connection to the current Exchange 2010 server (where all the mailboxes still reside) would get lost ... Speaking of lost, I am quite lost right now! :D Any help would be appreciated!