Learn more about selecting a different certificate for the hybrid deployment


Applies to: Exchange Online, Exchange Server, Exchange Server 2013


This feature of Exchange Server 2013 isn’t fully compatible with Office 365 operated by 21Vianet in China and some feature limitations may apply. For more information, see Learn about Office 365 operated by 21Vianet.

On the Certificate page, select a different certificate for the hybrid deployment configuration. This certificate will be used to authenticate secure mail transport between your on-premises Microsoft Exchange and Exchange Online organizations.

The certificate you choose must be one purchased from a trusted third-party certificate authority (CA) and installed on your Exchange 2013 Mailbox and Client Access servers. Self-signed or any certificates generated by your organization as the CA aren’t supported in hybrid mail transport.

For more information

Certificate requirements for hybrid deployments