We have a 2008 level domain.
The client currently has a hosted exchange solutions. We are moving them back to an on premise Exchange 2013 server. We built the Exchange server up and dropped it into the network.
We have not yet began to migrate mailboxes and user accounts over.
The issue we have is that as soon as we put it on the network all of the users were prompted in outlook for a new Exchange certificate. The cert is for the new server.
We have a software solution that we are testing out to migrate the mailboxes from the hosted solution to the on-premises solution but every time we turn the new exchange server on it, sends this cert notification to the users via outlook.
Is there any way to prevent this from happening until we are ready to move all of the users?