We have two domains. One production and one development. 1. Prod.mydomain.com 2. dev.mydomain.com Both have an Exchange environment and production has moved to 0365 and has an on-premise exchange server ( hybrid server)
I need to decommission this dev exchange environment.
How do I allow dev.mydomain.com users to test applications using O365 or On-premise Exchange server?
They only required test the mail functionality.