We need to know the easiest way to get our internal name space changed to be compliant. We have about 450 users and we have an in-house single Exchange 2010 mail server. The Mail server is using a standard UCC certificate that has the .local for a SAN; the certificate provider will not renew the certificate with the .local in the cert and that's the main reason for the migration. We thought about doing a AD name change, but heard that it was not "best practice" when there is an Exchange server in the mix.
Where do I begin? I have 2 extra servers that I can use, if needed.
Our servers are Server 2008r2