I'v just started looking into buying a new cert to upgrade from our 2003 SBS server to Exchange 2010.
Since Exchange 2010 uses 3 (in our case) subdomains then would that mean we need to have 3 external IP addresses too?
As each of these domains are used both internally and externally.
mail.company.com autodiscover.company.com legacy.company.com
Or am I missing something?
I know with web servers you can use SNI to get multiple certs on one IP, but I also know that this isn't supported to well with older browsers, thus people tend to not use SNI.