Indicates if the certificate was from a Trusted Root Authority (CA).
ValidDate
Indicates if the current date-time is within the certificate's life span.
ValidSignature
Indicates if the certificate has a valid signature.
Valid
Set this value to True to authenticate the remote certificate or set it to False to deny it.
Remarks
Typically, the remote certificate is rejected if TrustedRoot, ValidDate, or ValidSignature is False. This event allows you to ease or strengthen the restrictions on the remote host's certificate. To authenticate a certificate if one or all of the parameters are False, set Valid to True. You can also deny a certificate if the hostname is not the same as the IssuedTo property of the Certificate.