SSL certificate question

Iron Contributor

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.


Thanks in advance.

2 Replies
best response confirmed by Emy Loanzon (Iron Contributor)

Hi Emy,


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.


You can read more here -

@Nuno Silva - Thank you! Just the information I need.