Here is my situation: I have an AIX 4.3.3 machine, that I have compiled open-ldap, kerberos5 (1.3..6), and Samba 3.0.20. Here is my smb.conf file: [global] realm = REGION.DOMAIN.COM security = ADS password server = randomdc.region.domain.com workgroup = REGION client use spnego = yes ;winbind separator = \ [homes] comment = Home Directories read only = no create mode = 0750 browseable = no [styx] comment = Styx path = /styx public = yes [styx1] comment = Styx1 path = /styx1 public = yes Here is my krb5.conf [libdefaults] default_realm = REGION.DOMAIN.COM default_tkt_enctypes = des-cbc-md5 ; or des-cbc-crc default_tgs_enctypes = des-cbc-md5 ; or des-cbc-crc [realms] REGION.DOMAIN.COM = { kdc = randomdc.REGION.DOMAIN.COM } I was able to add this machine to the active directory (by the way, we are running 2003 ADS). I am also able to get info from wbinfo -u and wbinfo -g. Here is where it becomes a problem: I cannot authenticate from my Windoze box to this AIX machine running Samba. Here is the error message in log.smbd: [2005/08/30 07:46:05, 1] smbd/sesssetup.c:reply_spnego_kerberos(263) Username REGION\jbrown is invalid on this system [2005/08/30 07:46:06, 1] smbd/sesssetup.c:reply_spnego_kerberos(263) Username REGION\jbrown is invalid on this system [2005/08/30 07:46:06, 1] smbd/sesssetup.c:reply_spnego_kerberos(263) Username REGION\jbrown is invalid on this system [2005/08/30 07:46:07, 1] smbd/sesssetup.c:reply_spnego_kerberos(263) Username REGION\jbrown is invalid on this system [2005/08/30 07:46:16, 1] smbd/sesssetup.c:reply_spnego_kerberos(263) Username REGION\jbrown is invalid on this system However, I also see this in the log too: [2005/08/30 05:46:35, 1] smbd/service.c:close_cnum(835) pitcairn (172.16.64.92) closed connection to service styx [2005/08/30 05:46:59, 1] smbd/service.c:make_connection_snum(662) pitcairn (172.16.64.92) connect to service styx initially as user nobody (uid-2, gid=-2) (pid 18016) [2005/08/30 05:47:11, 1] smbd/service.c:close_cnum(835) pitcairn (172.16.64.92) closed connection to service styx [2005/08/30 05:47:34, 1] smbd/service.c:make_connection_snum(662) pitcairn (172.16.64.92) connect to service styx initially as user nobody (uid-2, gid=-2) (pid 18016) [2005/08/30 05:47:46, 1] smbd/service.c:close_cnum(835) pitcairn (172.16.64.92) closed connection to service styx [2005/08/30 05:48:10, 1] smbd/service.c:make_connection_snum(662) pitcairn (172.16.64.92) connect to service styx initially as user nobody (uid-2, gid=-2) (pid 18016) Here is some interesting stuff in log.nmbd (probably not related): [2005/08/30 07:47:43, 0] nmbd/nmbd_namequery.c:query_name_response(101) query_name_response: Multiple (3) responses received for a query on subnet 172 .16.64.91 for name NA<1d>. This response was from IP 172.16.65.19, reporting an IP address of 172.16.65.1 9. Here is winbindd log file: [2005/08/29 21:01:33, 1] nsswitch/winbindd.c:main(935) winbindd version 3.0.20 started. Copyright The Samba Team 2000-2004 [2005/08/29 21:01:33, 0] nsswitch/winbindd_util.c:winbindd_param_init(766) winbindd: idmap uid range missing or invalid [2005/08/29 21:01:33, 0] nsswitch/winbindd_util.c:winbindd_param_init(767) winbindd: cannot continue, exiting. [2005/08/29 21:01:33, 1] nsswitch/winbindd.c:main(968) Could not init idmap -- netlogon proxy only Any suggestions ? Any one else come across this ? Thank you. Jason Brown