Can 2 Exchange 2013 CU 13 servers (not load balanced) share the same third party SSL certificate? Looking for a recent tech article that shows this can be done.
One of the Exchange 2013 server, Server 1, is a hybrid server for O365, one is not. Both are virtual servers.Server 1 is also an internal SMTP relay server. Server 1 will have system maintenance. Server 2, will take over the internal SMTP relay server role while Server 1 is offline.
Yes, for the best practice you should have the same certificate across all Exchange Servers that offer services.
When configuring a hybrid deployment, you must use and configure certificates that you have purchased from a trusted third-party CA. The certificate used for hybrid secure mail transport must be installed on all on-premises Mailbox (Exchange 2016 and newer), and Mailbox and Client Access (Exchange 2013 and older) servers.