Dear List! I have the problem described at http://lists.samba.org/archive/samba/2008-February/138451.html It is materialized after an upgrade of samba/winbind. Everything was working before. I could not find the solution neither on the net, nor from people originally having the problem, so here I am. This problem is a showstopper for me. (I can login by changing pam_winbind to pam_krb5, but this does not cache credentials, so I cannot work at home.) Additional informations I figured out: - According to wireshark, winbind (wbinfo -K) tries to authenticate the principal 'RESmagosanyi1a313' instead of 'magosanyi1a313' - There are logs saying "Cannot resolve network address for KDC in requested realm" and "Could not receive trustdoms", which may or may not related to the problem. (see detailed logs below) original problem: Works: kinit wbinfo -u wbinfo -g wbinfo -t Fails: root@mxln133738# wbinfo -K magosanyi1a313 Enter magosanyi1a313's password: plaintext kerberos password authentication for [magosanyi1a313] failed (requesting cctype: FILE) error code was NT_STATUS_NO_SUCH_USER (0xc0000064) error messsage was: No such user Could not authenticate user [magosanyi1a313] with Kerberos (ccache: FILE) smb.conf: [global] client signing = yes client schannel = no client use spnego = yes client lanman auth = no client NTLMv2 auth = yes client plaintext auth = no # idmap domains = RES # idmap config RES:backend = ad # idmap config RES:default = yes # idmap config RES:schema_mode = rfc2307 # idmap config RES:range = 1000 - 300000000 # dns_lookup_kdc = false workgroup = RES realm = RES.HU.CORP preferred master = no security = ADS encrypt passwords = true syslog only = yes syslog = 3 log level = 3 winbind enum users = Yes winbind enum groups = Yes winbind use default domain = Yes winbind nested groups = Yes winbind separator = + winbind refresh tickets = true winbind offline logon = yes winbind cache time = 300 winbind normalize names = yes winbind offline logon = yes use kerberos keytab = Yes idmap uid = 3000-20000 idmap gid = 3000-20000 #idmap backend = idmap_rid:RES=3000-20000 ;template primary group = "Domain Users" template shell = /bin/bash winbind version: magosanyi1a313@mxln133738$ dpkg -l winbind Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad) ||/ Name Version Description +++-==============================-==============================-===========================================================================ii winbind 2:3.3.2-1ubuntu3 Samba nameservice integration server May 28 19:11:53 mxln133738 winbindd[17221]: [2009/05/28 19:11:53, 2] lib/tallocmsg.c:register_msg_pool_usage(106) May 28 19:11:53 mxln133738 winbindd[17221]: Registered MSG_REQ_POOL_USAGE May 28 19:11:53 mxln133738 winbindd[17221]: [2009/05/28 19:11:53, 2] lib/dmallocmsg.c:register_dmalloc_msgs(77) May 28 19:11:53 mxln133738 winbindd[17221]: Registered MSG_REQ_DMALLOC_MARK and LOG_CHANGED May 28 19:11:53 mxln133738 winbindd[17221]: [2009/05/28 19:11:53, 2] lib/interface.c:add_interface(340) May 28 19:11:53 mxln133738 winbindd[17221]: added interface eth0 ip=10.3.125.42 bcast=10.3.127.255 netmask=255.255.248.0 May 28 19:11:53 mxln133738 winbindd[17221]: [2009/05/28 19:11:53, 2] lib/interface.c:add_interface(340) May 28 19:11:53 mxln133738 winbindd[17221]: added interface eth0 ip=10.3.125.42 bcast=10.3.127.255 netmask=255.255.248.0 May 28 19:11:54 mxln133738 winbindd[17222]: [2009/05/28 19:11:54, 1] lib/util_tdb.c:tdb_validate_and_backup(1426) May 28 19:11:54 mxln133738 winbindd[17222]: tdb '/var/cache/samba/winbindd_cache.tdb' is valid May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 1] lib/util_tdb.c:tdb_validate_and_backup(1436) May 28 19:12:07 mxln133738 winbindd[17222]: Created backup '/var/cache/samba/winbindd_cache.tdb.bak' of tdb '/var/cache/samba/winbindd_cache.tdb' May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 2] winbindd/winbindd_util.c:add_trusted_domain(235) May 28 19:12:07 mxln133738 winbindd[17222]: Added domain BUILTIN S-1-5-32 May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 2] winbindd/winbindd_util.c:add_trusted_domain(235) May 28 19:12:07 mxln133738 winbindd[17222]: Added domain MXLN133738 S-1-5-21-283202338-3230163293-2318106275 May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 2] winbindd/winbindd_util.c:add_trusted_domain(235) May 28 19:12:07 mxln133738 winbindd[17222]: Added domain RES RES.HU.CORP S-1-5-21-698458317-4263495693-249106618 May 28 19:12:07 mxln133738 winbindd[17228]: [2009/05/28 19:12:07, 2] libsmb/cliconnect.c:cli_session_setup_kerberos(617) May 28 19:12:07 mxln133738 winbindd[17228]: Doing kerberos session setup May 28 19:12:07 mxln133738 winbindd[17228]: [2009/05/28 19:12:07, 1] libsmb/clikrb5.c:ads_krb5_mk_req(686) May 28 19:12:07 mxln133738 winbindd[17228]: ads_krb5_mk_req: krb5_get_credentials failed for bindc01$@RES (Cannot resolve network address for KDC in requested realm) May 28 19:12:07 mxln133738 winbindd[17228]: [2009/05/28 19:12:07, 1] libsmb/cliconnect.c:cli_session_setup_kerberos(624) May 28 19:12:07 mxln133738 winbindd[17228]: cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: Cannot resolve network address for KDC in requested realm May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 2] libsmb/cliconnect.c:cli_session_setup_kerberos(617) May 28 19:12:07 mxln133738 winbindd[17222]: Doing kerberos session setup May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 1] libsmb/clikrb5.c:ads_krb5_mk_req(686) May 28 19:12:07 mxln133738 winbindd[17222]: ads_krb5_mk_req: krb5_get_credentials failed for bindc01$@RES (Cannot resolve network address for KDC in requested realm) May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 1] libsmb/cliconnect.c:cli_session_setup_kerberos(624) May 28 19:12:07 mxln133738 winbindd[17222]: cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: Cannot resolve network address for KDC in requested realm May 28 19:12:07 mxln133738 winbindd[17222]: [2009/05/28 19:12:07, 2] winbindd/winbindd_util.c:add_trusted_domain(235) May 28 19:12:07 mxln133738 winbindd[17222]: Added domain HU hu.corp S-1-5-21-432019103-1439757928-1114753422 May 28 19:12:08 mxln133738 winbindd[17237]: [2009/05/28 19:12:08, 2] libsmb/cliconnect.c:cli_session_setup_kerberos(617) May 28 19:12:08 mxln133738 winbindd[17237]: Doing kerberos session setup May 28 19:12:08 mxln133738 winbindd[17237]: [2009/05/28 19:12:08, 1] libsmb/clikrb5.c:ads_krb5_mk_req(686) May 28 19:12:08 mxln133738 winbindd[17237]: ads_krb5_mk_req: krb5_get_credentials failed for bindc01$@RES (Cannot resolve network address for KDC in requested realm) May 28 19:12:08 mxln133738 winbindd[17237]: [2009/05/28 19:12:08, 1] libsmb/cliconnect.c:cli_session_setup_kerberos(624) May 28 19:12:08 mxln133738 winbindd[17237]: cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: Cannot resolve network address for KDC in requested realm May 28 19:12:08 mxln133738 winbindd[17222]: [2009/05/28 19:12:08, 2] winbindd/winbindd.c:remove_client(744) May 28 19:12:08 mxln133738 winbindd[17222]: final write to client failed: Broken pipe May 28 19:12:09 mxln133738 winbindd[17222]: [2009/05/28 19:12:09, 2] winbindd/winbindd.c:remove_client(744) May 28 19:12:09 mxln133738 winbindd[17222]: final write to client failed: Broken pipe May 28 19:12:18 mxln133738 wbinfo: [2009/05/28 19:12:18, 2] lib/interface.c:add_interface(340) May 28 19:12:18 mxln133738 wbinfo: added interface eth0 ip=10.3.125.42 bcast=10.3.127.255 netmask=255.255.248.0 May 28 19:12:18 mxln133738 winbindd[17222]: [2009/05/28 19:12:18, 1] winbindd/winbindd_util.c:trustdom_recv(303) May 28 19:12:18 mxln133738 winbindd[17222]: Could not receive trustdoms May 28 19:12:21 mxln133738 winbindd[17222]: [2009/05/28 19:12:21, 2] winbindd/winbindd.c:remove_client(744) May 28 19:12:21 mxln133738 winbindd[17222]: final write to client failed: Broken pipe May 28 19:12:21 mxln133738 winbindd[17228]: [2009/05/28 19:12:21, 1] libads/kerberos.c:smb_krb5_get_ntstatus_from_krb5_error_init_creds_opt(159) May 28 19:12:21 mxln133738 winbindd[17228]: no krb5_error May 28 19:12:21 mxln133738 winbindd[17228]: [2009/05/28 19:12:21, 1] libads/authdata.c:kerberos_return_pac(398) May 28 19:12:21 mxln133738 winbindd[17228]: kinit failed for 'RES\magosanyi1a313@RES.HU.CORP' with: Client not found in Kerberos database (-1765328378) May 28 19:12:21 mxln133738 winbindd[17228]: [2009/05/28 19:12:21, 2] libsmb/cliconnect.c:cli_session_setup_kerberos(617) May 28 19:12:21 mxln133738 winbindd[17228]: Doing kerberos session setup May 28 19:12:21 mxln133738 winbindd[17228]: [2009/05/28 19:12:21, 1] libsmb/clikrb5.c:ads_krb5_mk_req(686) May 28 19:12:21 mxln133738 winbindd[17228]: ads_krb5_mk_req: krb5_get_credentials failed for bindc01$@RES (Cannot resolve network address for KDC in requested realm) May 28 19:12:21 mxln133738 winbindd[17228]: [2009/05/28 19:12:21, 1] libsmb/cliconnect.c:cli_session_setup_kerberos(624) May 28 19:12:21 mxln133738 winbindd[17228]: cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: Cannot resolve network address for KDC in requested realm May 28 19:12:21 mxln133738 winbindd[17228]: [2009/05/28 19:12:21, 2] winbindd/winbindd_pam.c:winbindd_dual_pam_auth(1727) May 28 19:12:21 mxln133738 winbindd[17228]: Plain-text authentication for user RES\magosanyi1a313 returned NT_STATUS_NO_SUCH_USER (PAM: 10) May 28 19:12:21 mxln133738 winbindd[17222]: [2009/05/28 19:12:21, 2] winbindd/winbindd.c:remove_client(744) May 28 19:12:21 mxln133738 winbindd[17222]: final write to client failed: Broken pipe May 28 19:12:23 mxln133738 winbindd[17252]: [2009/05/28 19:12:23, 1] rpc_client/cli_pipe.c:rpc_pipe_destructor(2362) May 28 19:12:23 mxln133738 winbindd[17252]: rpc_pipe_destructor: cli_close failed on pipe host bindc01.res.hu.corp, pipe \NETLOGON, fnum 0x4005. Error was SUCCESS - 0 May 28 19:12:23 mxln133738 winbindd[17252]: [2009/05/28 19:12:23, 2] libsmb/cliconnect.c:cli_session_setup_kerberos(617) May 28 19:12:23 mxln133738 winbindd[17252]: Doing kerberos session setup May 28 19:12:23 mxln133738 winbindd[17252]: [2009/05/28 19:12:23, 1] libsmb/clikrb5.c:ads_krb5_mk_req(686) May 28 19:12:23 mxln133738 winbindd[17252]: ads_krb5_mk_req: krb5_get_credentials failed for bindc01$@RES (Cannot resolve network address for KDC in requested realm) May 28 19:12:23 mxln133738 winbindd[17252]: [2009/05/28 19:12:23, 1] libsmb/cliconnect.c:cli_session_setup_kerberos(624) May 28 19:12:23 mxln133738 winbindd[17252]: cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: Cannot resolve network address for KDC in requested realm