[Samba] password server rejecting users

[Saravanan]

Hi,

I am new to samba. I have configured password server to authenticate centos users. But i got the following errors and not authenticating. 

 [2007/10/29 02:48:24, 1]
auth/auth_server.c:check_smbserver_security(363)
password server WINDOWS rejected the password

following is my smb.conf

[global]
    workgroup = WINDOWSAD
    server string = Samba Server
    security = SERVER
    password server = WINDOWS
    client lanman auth = No
    client plaintext auth = No
    log file = /var/log/samba/%m.log
    max log size = 50
    dns proxy = No
    ldap ssl = no
    cups options = raw




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