samba - Apr 2012 - Samba Winbind Standalone issue Failed to join domain

Hello,


as part of environment we are planning to integrate all linux host to
activedirectory for authentication.
I have installed following versions of samba and winbind packages and
update smb.conf file and /etc/krb5.conf
samba3x-3.5.10-0.108.el5_8                    Wed 11 Apr 2012 10:13:46 AM
CDT
samba3x-common-3.5.10-0.108.el5_8             Wed 11 Apr 2012 10:13:44 AM
CDT
samba3x-winbind-3.5.10-0.108.el5_8            Wed 11 Apr 2012 10:13:43 AM
CDT
libtdb-1.2.1-6.el5                            Wed 11 Apr 2012 10:13:42 AM
CDT
libtalloc-2.0.1-11.el5                        Wed 11 Apr 2012 10:13:42 AM
CDT

when I run this command I am running into this error. I have address my
server in active directory and also update the DNS server.

[root at LinuxADtest ~]# net ads join -U z875855
Host is not configured as a member server.
Invalid configuration.  Exiting....
Failed to join domain: This operation is only allowed for the PDC of the
domain.
[root at LinuxADtest ~]#

please let me know what am I missing here !!

Thanks,