This object defines a Kerberos Ticket Control Mask that instructs the MTA to invalidate the specific application server Kerberos ticket(s) that are stored locally in the MTA NVRAM (non-volatile or persistent memory). If the MTA does not stored Kerberos tickets in NVRAM, it MUST ignore setting of this object, and MUST report a BITS value of zero when the object is read. If the MTA supports Kerberos tickets storage in NVRAM, the object value is encoded as follows: - setting the invalidateProvOnReboot bit (bit 0) to 1 means that the MTA MUST invalidate the Kerberos Application Ticket(s) for the Provisioning Application at the next MTA reboot, - setting the invalidateAllCmsOnReboot bit (bit 1) to 1 means that the MTA MUST invalidate the Kerberos Application Ticket(s) for all CMSes currently assigned to the MTA endpoints.