Install the GlobalSign Intermediate root CA certificates on your web server
DomainSSL customers must install your end entity DomainSSL Certificate and the Domain Validation CA Certificate onto your web server. Your DomainSSL Certificate is sent to you by email. Copy and Save the below certificate to your web server and follow the Installation Instructions appropriate for your web server type.
Copy and Past ALL characters within the below box (including the -----BEGIN CERTIFICATE----- and -----END CERTIFICATE-----) into a text editor and Save to your web server.