Exchange 2010 - 2013 Co-existence
Posted on 2013-06-20
I have recently installed Exchange 2013 into an Exchange 2010 environment using the Microsoft Exch Deployment 'guide'
Everything has gone successfully and the servers can see each other, I have also successfully done a pilot migration of one user to the Exchange 2013 server.
Setup as follow for reference.
Exch 2010 internal address - mailserver.domain.co.za
Exch 2010 external address - exchange.domain.co.za
Exch 2013 internal address - exchange.domain.co.za
Exch 2013 external address - exchange.domain.co.za
3rd Party SSL cert SAN - exchange.domain.co.za
My question is, how the hell do you get the servers to work together properly?
The mail flow is fine, mail is flowing in and out through the 2010 server, but things like Outlook anywhere, Mobile devices, owa ect aren't redirecting the mailboxes.
My 'remote' address is exchange.domain.co.za and that is currently pointing to the Exchange 2010 server, but when I try connect a user on the exchange 2013 server to exchange.domian.co.za (for mobile setup, owa and outlook anywhere) it says the mailbox is unavailable or doesnt exist (becuase from what I can see the exchange 2010 isnt forwarding the request to the 2013 server)
I remember during 2003 -2010 migrations, this used to work well.
What do I need to do to get the co-existence to work using 1 FQDN exchange.domain.co.za
Basically, I want all requests to hit the Exchange 2010 server, and then if it realises the mailbox is on the exchange 2013 server, do the relevent redirects.