[Samba] Samba 3.0.28 failing to authenticate on Win2003 Server Active Directory

[Langdon Stevenson]

I have set up a Fedora 8 server running Samba 3.0.28a-0.fc8 (the Fedora
yum package version).  I have successfully joined the server to the AD
realm of a Win2003 server on the office network.

Configuration was done following this guide:

   http://www.howtoforge.com/samba-domaincontroller-swat-fedora8-p3

However Authentication against the AD server does not work.  When I test
winbind with:

   # wbinfo -u

I get:

   Error looking up domain users

I have also found the following output in /var/log/messages/  It is
generated each time Samba is started (note: date and time have been
removed for clarity)


srv winbindd[6850]: [2008/05/06 11:18:14, 0]
param/loadparm.c:service_ok(3031)
srv winbindd[6850]:   WARNING: No path in service public - making it
unavailable!
srv winbindd[6851]: [2008/05/06 11:18:14, 0]
nsswitch/winbindd_cache.c:initialize_winbindd_cache(2222)
srv winbindd[6851]:   initialize_winbindd_cache: clearing cache and
re-creating with version number 1
srv winbindd[6853]: [2008/05/06 11:18:14, 0] lib/fault.c:fault_report(41)
srv winbindd[6853]:
===============================================================
srv winbindd[6853]: [2008/05/06 11:18:14, 0] lib/fault.c:fault_report(42)
srv winbindd[6853]:   INTERNAL ERROR: Signal 11 in pid 6853 (3.0.28a-0.fc8)
srv winbindd[6853]:   Please read the Trouble-Shooting section of the
Samba3-HOWTO
srv winbindd[6853]: [2008/05/06 11:18:14, 0] lib/fault.c:fault_report(44)
srv winbindd[6853]:
srv winbindd[6853]:   From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
srv winbindd[6853]: [2008/05/06 11:18:14, 0] lib/fault.c:fault_report(45)
srv winbindd[6853]:
===============================================================
srv winbindd[6853]: [2008/05/06 11:18:14, 0] lib/util.c:smb_panic(1655)
srv winbindd[6853]:   PANIC (pid 6853): internal error
srv winbindd[6853]: [2008/05/06 11:18:14, 0]
lib/util.c:log_stack_trace(1759)
srv winbindd[6853]:   BACKTRACE: 19 stack frames:
srv winbindd[6853]:    #0 winbindd(log_stack_trace+0x2d) [0xb7d5de9d]
srv winbindd[6853]:    #1 winbindd(smb_panic+0x5d) [0xb7d5dfcd]
srv winbindd[6853]:    #2 winbindd [0xb7d48a4a]
srv winbindd[6853]:    #3 [0x12d420]
srv winbindd[6853]:    #4 winbindd(pwd_get_cleartext+0x18) [0xb7d9b638]
srv winbindd[6853]:    #5 winbindd(cm_connect_sam+0x156) [0xb7ce89f6]
srv winbindd[6853]:    #6 winbindd [0xb7cea8f9]
srv winbindd[6853]:    #7 winbindd [0xb7ced6e7]
srv winbindd[6853]:    #8 winbindd [0xb7cd2649]
srv winbindd[6853]:    #9 winbindd [0xb7cd2d29]
srv winbindd[6853]:    #10 winbindd [0xb7cd31a8]
srv winbindd[6853]:    #11
winbindd(winbindd_dual_list_trusted_domains+0x78) [0xb7ce3008]
srv winbindd[6853]:    #12 winbindd [0xb7cf3622]
srv winbindd[6853]:    #13 winbindd(init_child_connection+0x19a)
[0xb7ccfdaa]
srv winbindd[6853]:    #14 winbindd(async_domain_request+0xb6) [0xb7cf4f86]
srv winbindd[6853]:    #15 winbindd(rescan_trusted_domains+0x110)
[0xb7cd03f0]
srv winbindd[6853]:    #16 winbindd(main+0x75d) [0xb7cc5e0d]
srv winbindd[6853]:    #17 /lib/libc.so.6(__libc_start_main+0xe0) [0x2e3390]
srv winbindd[6853]:    #18 winbindd [0xb7cc42a1]
srv winbindd[6853]: [2008/05/06 11:18:14, 0] lib/fault.c:dump_core(181)
srv winbindd[6853]:   dumping core in /var/log/samba/cores/winbindd
srv winbindd[6853]:


The Samba config file /etc/samba/smb.conf

   [global]
     log file = /var/log/samba/log.%m
     workgroup = SLA
     realm = SLA.COM.AU
     preferred master = no
     server string = Merit1
     security = ADS
     encrypt passwords = yes
     log level = 3
     max log size = 50
     printcap name = cups
     printing = cups
     winbind enum users = Yes
     winbind enum groups = Yes
     winbind use default domain = Yes
     winbind nested groups = Yes
     winbind separator = +
     idmap uid = 600-20000
     idmap gid = 600-20000
     template shell = /bin/bash
     template homedir = /home/domain/%D/%U

   [homes]
     comment = Home Direcotries
     valid users = %S
     read only = No
     browseable = No

   [netlogon]
     comment = Network Logon Service
     path = /var/lib/samba/netlogon
     guest ok = yes
     writable = no
     share modes = no

I have used Samba in small workgroups for some years, but this is the
first time that I have tried anything with Active Directory, so I am way
out of my depth.

Can anyone recommend how I should go about troubleshooting this issue?
if you require more information please let me know.

Regards,
Langdon