We are trying to figure out on how many names will be sufficient to meet our requirements for a SAN certificate that will be installed on Microsoft Exchange server 2013. Below is a list of our domains (fictitious names):
Internal Domain - abc.abc.com (Mail server is mail10.abc.abc.com)
External Domain - abc.com (email domain)
Additional External Domain - xyz.com (users email address = firstname.lastname@example.org)
In our setup the AD domain is abc.abc.com, the email domain for most people is xyz.com, but we also have some people that have email addresses @abc.com.
So when I buy the SSL certificate, I assume I would need:
Is this correct or do i need more or less? Any input is appreciated.