kadmin error - caching

[Chee Leong Dew]

Hi,

1. 
I try to login using kadmin,but something weird happened : The
ldap/admin at CLIENT8.MYTESQ.COM doesn't exist in KDC.I have deleted the
ldap/admin at CLIENT8.MYTESQ.COM using delprinc.

[root at client8 sbin]# kadmin
Authenticating as principal ldap/admin at CLIENT8.MYTESQ.COM with password.
kadmin: Client not found in Kerberos database while initializing kadmin
interface

Why ? 

2. How ro remove the default authentication for the principal ? Does
Kerberos handle this automatically ? 

Regards,CL