This works for us, so it's something that should work. It's probably related to 
the way your authentication is setup, we used to use custom from before IBM 
supporting AD+LDAP and we had to add entries for the group SID in the LDAP 
server also, but since moving to "supported" way of doing this, we don't think 
we need this anymore.. You might want to do some digging with the wbinfo 
command and see if groups/SIDs resolve both ways, but I'd suggest opening a PMR 
on this.

You could also check what file-permissions look like with mmgetacl. In the past 
we've seen some funkiness where creator/owner isn't on/inherited, so if the 
user owns the file/directory but the permission is to the group rather than 
directly the user, they can create new files but then not read them afterwards 
(though other users in the group can). I forget the exact details as we worked 
a standard inheritable ACL that works for us __

Simon

On 02/10/2019, 18:02, "[email protected] on behalf of 
David Johnson" <[email protected] on behalf of 
[email protected]> wrote:

    After converting from clustered CIFS to CES protocols, we’ve noticed that 
SMB
    users can’t access files owned by groups that they are members of, unless 
that 
    group happens to be their primary group.  Have read the smb.conf man page,
    and don’t see anything obvious that would control this…  What might we be 
missing?
    
    Thanks,
     — ddj
    Dave Johnson 
    Brown University CCV/CIS
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