Please note: The SSB does not support two-tier certificates or chain certificates.
1. Downloaded the CA X.509 certificate of the remote SSB. To download the server certificate, navigate to Basic Settings > Management > SSL certificate > CA X.509 certificate, and click on the certificate.
2. On the SSB where the remote logspace was created navigate to Log > Remote Logspaces
3. In the Remote certificate authority section, click to upload the server certificate of the remote SSB. A pop-up window is displayed. Click Browse, select the certificate of the remote SSB, then click Upload.
For more information see the SSB Admin Guide