This property controls whether or not a vRealize Hyperic agent issues a warning when the vRealize Hyperic server presents an SSL certificate that is not in the agent's keystore and is either self-signed or signed by a different certificate authoridy than the one that signed the agent's SSL certificate.

When the default is used, the agent issues the warning

The authenticity of host 'localhost' can't be established.
Are you sure you want to continue connecting? [default=no]: 

If you respond yes, the agent imports the server's certificate and will continue to trust the certificate from this point on.