After you have obtained a certificate from a trusted CA, complete the following steps on an %BRAND_EXCHANGE_ONLINE_SHORT% ...

After you have obtained a certificate from a trusted CA, complete the following steps on an %BRAND_EXCHANGE_ONLINE_SHORT% 2013 server to import your certificate and configure %BRAND_EXCHANGE_ONLINE_SHORT% services to use the certificate for your hybrid deployment. You will also need to import the certificate to your Mailbox servers and assign %BRAND_EXCHANGE_ONLINE_SHORT% services.