We have installed Exchange 2016 servers on our existing Exchange 2010 environment.
There's a load balancer (host: owa.domain.com) that routes traffic to Ex2010 CAS servers.
Now, we just did a cutover so that owa.domain.com now points to Exchange 2016 servers.
After the cutover, we found the following:
1. Ex2010 mailbox working fine on owa/outlook
2. We migrated one mailbox from Ex2010 to Ex2016 database, after migration we cannot access the mailbox using https://owa.domain.com / outlook.
3. But, after the mailbox migration, the mailbox can be accessed if we access it using the Ex2016 server name (https://Ex2016/owa)
To summarize, the mailboxes hosted on Ex2016 server/db are only accessible if we access it via https://Ex2016/owa url , but its not working if we use the load balanced host - https://owa.domain.com
Can anyone please help to fix the issue so that we can also the Ex2016 mailboxes using owa.domain.com url ?
Thanks in advance.