samba File permisions not as expected after upgrade of samba

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samba File permisions not as expected after upgrade of samba
Redhat 6.6 and Redhat 6.7

We updated yesterday to the following and now we see the following

samba-client-3.6.23-20.el6.x86_64
samba-winbind-3.6.23-20.el6.x86_64
samba-winbind-clients-3.6.23-20.el6.x86_64
samba-common-3.6.23-20.el6.x86_64
samba-3.6.23-20.el6.x86_64

With the following in smb.conf
[docarchive]
path = /opt/shares/users
writable = yes
public = yes
create mask = 664
directory mask = 0777
force group = users

From the windows server when a file is created is now reports
-rw-rw-r-- 1 charvey BUILTIN\users 0 Sep 9 11:51 CHarvey Test Doc3.txt

however on this version we see
samba-client-3.6.23-14.el6_6.x86_64
samba-common-3.6.23-14.el6_6.x86_64
samba-winbind-3.6.23-14.el6_6.x86_64
samba-3.6.23-14.el6_6.x86_64
samba-winbind-clients-3.6.23-14.el6_6.x86_64

-rw-rw-r-- 1 charvey users 0 Sep 9 11:44 CHarvey Live Test Doc.txt

We expect that files created with the force group = users option set in samba are created with the group set to "users" and not "BUILTIN\users"

Any one know why this has happened?

PI
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Responses

PI Newbie 15 points
9 September 2015 4:36 AM

The Solution for us was to comment out the following line in the smb.conf

#winbind use default domain = yes

This reports the groups correctly and a side affect is that is adds the domain to the user name ( as expected)

PI Newbie 15 points
10 September 2015 1:43 AM

Please note while the above allowed files to saved this side affect of this is that all users had to log in with domain details - which in our case was to hard for our users.

Our hack was a cron to find all files with a group of "BUILTIN\users" and chown it to "users"

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