"Lock passphrase user accounts, after failed login attempts" is not supported on the Mac. Users are not locked out from the PGP bootguard when they enter the passphrase incorrectly.
Symantec Corporation is committed to product quality and satisfied customers. This Feature Request is currently being considered by Symantec Corporation to be addressed in a forthcoming version of the product.
Technical Support filed a Feature Request to add this product feature. Note that an feature request is exactly that, a request. There is no committed date for this request from the Endpoint Encryption Product Management team, nor from the Endpoint Encryption Engineering team at this time.
Please be sure to refer back to this document periodically as any changes to the status of the request will be reflected here.
All Mac systems encrypted with PGP Whole Disk Encryption in conjunction with the PGP Universal Server