So, I have set up my Exchange 2013 CAS server which is to be used as my Office 365 Hybrid server for mailbox migrations.
My question is what all do I need to add to the SAN for this SSL Certificate?
We accept mail for numerous mail domains (28 total) which only 15% of my users use a different primary SMTP address. Everyone has the one main SMTP and SIP address, just those 15% are manually updated to use a different Primary SMTP address.
I know I need webmail.domainname.com, autodiscover.domainname.com, but do I need to have a SAN Certificate for ALL 28 domains or can I get away with using just the common (master) dominate that everyone has?
All our mail flow is being directed thru EOP already thru connectors.
Anyone got an Hybrid Server Certificates for Dummies advice for this non-expert?