Hello, I'm new to the list and hope this is the appropriate place to post this type of question. We've got our environment set up where all of our Unix and Linux hosts get user information and perform authentication against an LDAP directory. I am working on a project to migrate these hosts to instead authenticate against our Active Directory environment (Win 2k8 R2). So far, I've been able to get direct LDAP authentication working against AD, but I'd like to use winbind instead. I've been working with our CentOS Linux hosts first. Since the POSIX attributes are already populated on the AD objects (the ones that need them, anyways), I'd like to configure winbind to pull that information from AD where available. CentOS 5 (samba 3.0.33) seems to work as advertised; I'm able to join the domain and get user information just fine. CentOS 6, however, is giving me fits. The samba packages installed are version 3.5.4. Here is the data I've observed: - Joining to domain works properly - wbinfo -u brings back a full list of all domain users - wbinfo -g brings back a full list of all domain groups - wbinfo -n testerx returns the appropriate SID - wbinfo -U <numeric uid> returns the same SID - wbinfo -S <SID> returns the appropriate numeric uid - wbinfo -i testerx returns 'Could not get info for user testerx' - getent passwd returns only local accounts - getent group returns only local groups - I've verified that winbind is in the nsswitch.conf I've got the following in my [global] section in my smb.conf: workgroup = MYDOMAIN password server = mydc.mydomain.com realm = MYDOMAIN.COM security = ads idmap backend = ad idmap uid = 1000-2147483647 idmap gid = 1000-2147483647 idmap domains = MYDOMAIN idmap config MYDOMAIN:backend = ad idmap config MYDOMAIN:range = 1000-2147483647 idmap config MYDOMAIN:schema_mode = rfc2307 idmap config MYDOMAIN:readonly = yes winbind nss info = rfc2307 template shell = /bin/bash winbind use default domain = yes winbind offline logon = true winbind enum users = yes winbind enum groups = yes winbind nested groups = no encrypt passwords = yes log level = 7 passdb:2 auth:10 winbind:10 tdb:10 idmap:10 winbind trusted domains only = no client use spnego = yes allow trusted domains = no I've tried (rather randomly) changing some of the values of the latter entries as well as the value of the idmap backend parameter to use tdb while specifying the config for MYDOMAIN to use ad backend. I'm rather stumped at this point. I've Googled around and it seems I'm not the only one having issues, but nobody seems to have posted a solution. Does anyone have any ideas? Am I hitting a bug in the Cent 6 package that has nothing to do with my config? Is there something potentially screwy with AD (I've mostly ruled this possibility out due to the fact that the Cent 5 hosts are working fine)? Any help is appreciated! Thanks! Greg