Using Messaging, you can install your vendor signed certificates on your Messaging systems. Using your vendor signed certificates help to alleviate the errors you receive while logging into the SMI. A trusted certificate must be a Certificate Authority (CA) certificate and built for a particular system name, that is, fully qualified domain name.
You can use the Certificate Signing Request (CSR) Web page to manage the CSRs present on the server. You can generate a CSR to send to your CA, that is, Entrust and VeriSign. For more information, see Administering Avaya Aura® Messaging.