I understand that for coexistance, I need the following host names:
Currently for our Exchange 2007, clients apps connect to a host name called outlook.mydomain.com.
Do I use this same name in place of mail.domain.com? If so, what would the name for legacy.mydomain.com?
Or does the legacy.mydomain.com become replaced by outlook.mydomain.com and a new host name is chosen for mail.mydomain.com.
Long term, I would like to keep outlook.mydomain.com since all my client apps currently point to it and I dont want to have to reconfigure them.
Also, do I apply this new certificate to both my 2013 server and replace the current cert on my 2007 with this one as well?