[Samba] Not possible to chown as guest?

[john smith]

On 5/26/17, Rowland Penny via samba <samba at lists.samba.org> wrote:
> On Fri, 26 May 2017 22:19:17 +0900
> john smith via samba <samba at lists.samba.org> wrote:
>
>>
>> But I just want to change group ownership.  In order to change
>> ownership to a given group a user has to be a member of that
>> group. And in my case user nobody is a member of users group and can
>> change file ownership to users group if it's done directly on the
>> server but cannot do that when done on the different system in a
>> directory when the share is mounted.
>
> But then again, 'nobody' should only be a member of the 'nogroup' group
>
> Doing what you are trying to do is very probably a security risk.

It might be.  However, the primary issue for me is to explain why
can't I perform a chown operation with guest user.  Is it
fundamentally forbidden or is there a quirk?
-- 
<wempwer at gmail.com>