Optional. When specified, explicitly sets the hostname or IP address of the Kerberos key distribution centre (KDC).
When left unspecified, the KDC is assumed to be located on the same server as the connected Active Directory domain controller. Windows domains are most commonly configured in this manner.
This parameter is applicable only when SASL authentication is enabled, and Kerberos V5 is used as the SASL authentication mechanism. Specifically, the following configuration parameters must be set: