[Samba] Automatically add group

[Duong Manh Hung]

Dear All.

I have a file server. I installed the samba on it to store the document.
See below for the security :

- group :

    + g1 : user1, user2,user3

    + g2 : user4, user5,user6

    + g3 : user1,user5

- folder :

   + folder A : set permission chmod 775   and  group chown root:g3

The problem is when the user1 modified a file in folder A then that file
add the group g1 automatically. So the user2 can modify that file.



Quest : How to deny to add group automatically.



Thanks ALL.