[Samba] smbpasswd problem

[anthony ho]

Dear all,
 
   Im now testing SAMBA under LDAP . I have a LDAP account anthony. I do not know how to use smbpasswd to change this LDAP account. 
./smbpasswd -a anthony -s 12345678
I have the following mesasge  : 
 
User anthony does not exist in system password file (usually /etc/passwd). Cannot add account without a valid local system user.Failed to modify password entry for user anthony
 
Would anyone let me know how to refer my account in LDAP not in /etc/passwd ? 
Thanks.
 
Anthony


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