Installed and created a new mailbox on 2016 and i was able to configure new created mailbox on outlook 2016,
now i changed all virtual directories(Addresses) and configured receive connectors, exchange 2016 mailbox is working normally with internal and external users(receiving emails, sent connector is not yet configured) but now by configuring these mailboxes on outlook giving me a warring or error, please check the attached file:
Note: DNS is not yet modified all traffic are still pointing to exchange 2010 not 2016 but even i am not able to connect mailbox with exchange 2016 name as well.
I am glad you figured this one out. I saved this for future reference.
Se Lai
ASKER
Solved by changing MAPI internal URL, As i am in co-existing environment so the DNS name (mail.orgazaion.com) was not forwarding traffic to new exchange server.