samba - Aug 2003 - winbind can not find Windows PDC

Hi,

I got some problem to make winbind to work with PDC in other network.
When I start winbind with debug option ,=20
it alwasy says it can not find Domain Controller.

load_dos_unicode_map: 850
load_unicode_map: loading unicode map for codepage 850.
load_unix_unicode_map: ISO8859-1 (init_done=3D0, override=3D0)
load_unicode_map: loading unicode map for codepage ISO8859-1.
added interface ip=3D172.16.1.9 bcast=3D172.16.1.255 nmask=3D255.255.255.0
Could not look up dc's for domain ARFLEX-TPE
Could not open a connection to ARFLEX-TPE for \PIPE\lsarpc
(NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)
Retrying startup domain sid fetch for ARFLEX-TPE
Could not look up dc's for domain ARFLEX-TPE
domain ARFLEX-TPE already tried and failed
Could not open a connection to ARFLEX-TPE for \PIPE\lsarpc
(NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)

Here are my enviroment :

  Linux server :=20
    RedHat 7.2=20
    Samba 2.2.8a
    IP is 172.16.1.9 , netmask is 255.255.255.0

    /usr/local/samba/lib/smb.conf :
    [global]
        workgroup =3D ARFLEX-TPE
        security =3D DOMAIN
        encrypt passwords =3D Yes
        password server =3D 192.168.100.3
        winbind uid =3D 10000-20000
        winbind gid =3D 10000-20000
        template shell =3D /bin/bash
        winbind separator =3D +
        winbind cache time =3D 10

  Windows 2000 DC :
    Windows 2000 Server with SP4
    IP is 192.168.100.3 , netmask is 255.255.255.0
    Domain is ARFLEX-TPE

I can join the Domain successfully and any PC can browse this Samba Server.

Please give me your advice.
Thanks in advance.

Regards,

Eric Pan