yum downgrade samba-3.6.23-25.el6_7.x86_64 samba-common-3.6.23-25.el6_7 samba-winbind-clients-3.6.23-25.el6_7 samba-client-3.6.23-25.el6_7 samba-winbind-3.6.23-25.el6_7

C:Usersadmin>net use \servername /user:INTRANETusername
The password or user name is invalid for \servername.

Enter the password for 'INTRANETusername' to connect to 'servername':
System error 5 has occurred.

Access is denied.

[2016/04/18 14:09:19.133618,  2] ../libcli/auth/credentials.c:289(netlogon_creds_client_check)   credentials check failed
[2016/04/18 14:09:19.133674,  0] rpc_client/cli_netlogon.c:623(rpccli_netlogon_sam_network_logon)   rpccli_netlogon_sam_network_logon: credentials chain check failed
[2016/04/18 14:09:19.134036,  0] auth/auth_domain.c:331(domain_client_validate)   domain_client_validate: unable to validate password for user username in domain INTRANET to Domain controller AD6. Error was NT_STATUS_ACCESS_DENIED.
[2016/04/18 14:09:19.135842,  5] auth/auth.c:281(check_ntlm_password)   check_ntlm_password: winbind authentication for user [username] FAILED with error NT_STATUS_ACCESS_DENIED
[2016/04/18 14:09:19.135917,  2] auth/auth.c:330(check_ntlm_password)   check_ntlm_password:  Authentication for user [username] -> [username] FAILED with error NT_STATUS_ACCESS_DENIED

username$ ls -l /export/projects/testproject
drwxrws---.  2 root testgrp     4096 Apr 18 11:24 testproject

username$ ls -l /export/projects/testproject/
-rw-r--r--. 1 root testgrp         0 Apr 18 11:24 test.txt

idmap config * : backend = tdb
idmap config * : range = 1000000-1999999