[Samba] One interesting question !?

[Louie Chan Ching Kwong]

Dear Sir/Madam,

After I had mounted the smb filesystem like below from one remote samba
server with the root level (login as root),  one normal user with any
login name can modify all files in the mounted smb folders.

Why can the non-root users make change for the files in the mounted smb
directories ?

===== Mounted SMB Shares =========================
//192.168.0.139/faxin on /var/spool/fax/faxdata/faxin type smbfs (0)
//192.168.0.139/faxin-error on /var/spool/fax/faxdata/faxin-error type
smbfs (0)
//192.168.0.139/faxout on /var/spool/fax/faxdata/faxout type smbfs (0)
//192.168.0.139/faxout-error on /var/spool/fax/faxdata/faxout-error type
smbfs (0)
//192.168.0.139/broadcast on /var/spool/fax/faxdata/broadcast type smbfs
(0)
//192.168.0.139/faxconfig on /var/spool/fax/faxdata/faxconfig type smbfs
(0)

===== I login with the "admin" user lD ========
[admin at fax faxdata]$ pwd
/var/spool/fax/faxdata
[admin at fax faxdata]$ ls -l
total 24
drwxr-xr-x    1 root     root         4096 Aug 15 18:34 broadcast
drwxr-xr-x    1 root     root         4096 Jan 20 18:23 faxconfig
drwxr-xr-x    1 root     root         4096 Jan 20 17:05 faxin
drwxr-xr-x    1 root     root         4096 Dec 31 07:25 faxin-error
drwxr-xr-x    1 root     root         4096 Jul 28 19:00 faxout
drwxr-xr-x    1 root     root         4096 Jul  8  2002 faxout-error
[admin at fax faxdata]$ cd faxconfig
[admin at fax faxdata]$ ls -l
-rwxr-xr-x    1 root     root            1 Sep  1 21:08 autoreply.flg
-rwxr-xr-x    1 root     root           14 Jan 20 18:16 sql.ini
-rwxr-xr-x    1 root     root           31 Jan 20 18:16 sql.ini~

THEN, I can make change all files in THIS FOLDER although I am NOT root.

Do you know why ?

Remark: I am using the RedHat 7.3 on the linux server running
smbmount. The samba server is running RedHat 7.2 !
 
Thanks for your kind attention !

Best Regards. Louie