[Samba] Mac OS and interpretation of @ in a username. Ex user at mds.xyz doesn't work on Mac OS but does on Win 10

[Rowland penny]

On 23/02/2020 16:05, TomK wrote:
> On 2/21/2020 9:18 PM, Andrew Bartlett via samba wrote:
>> On Fri, 2020-02-21 at 20:48 -0500, TomK wrote:
>>>
>>>
>>>>
>>>> "Sadly this really appears to be is a client issue.  You see there the
>>>> string Samba gets, so by the time Samba tries the process it the @ is
>>>> already interpreted and the string split.
>>>>
>>>> Sorry!
>>>>
>>>> Andrew Bartlett"
>>>>
>>>> Yeah, wondering if there is a way to tell Samba NOT to split that 
>>>> up and
>>>> treat joe at mds.xyz as a single user.  This works fine in Win 10 so I
>>>> agree, it's probably a client SMB configuration issue but would 
>>>> like to
>>>> know exactly what that config issue is.
>>>>
>>>
>>>    + or what paramaters I could change to ensure the string isn't 
>>> split up.
>>
>> You can't change it on the Samba side, you could try logging in as
>> SERVER\joe at mds.xyz or see if you can re-map it server-side with the
>> various username map options.
>>
>> You need to realise that the protocol has a domain field and a username
>> one.  Well behaved clients know that user at realm style usernames need to
>
>> all be in the username field, not split up client-side (and left to the
>> DC to interpret), but even Samba got this wrong for quite some time.
>>
>> I hope this helps,
>>
>> Andrew Bartlett
>>
>
>
> I'm seeing what you mean.  I'll have to read into the server-side 
> re-map options.  No idea where to find them (yet).
Try searching for 'username map'
>
> Looking at the attached logs however, appears the server is already 
> getting the split user.  Or am I reading that incorrectly?
It looks Windows is sending 'joe at mds.xyz', but your Macbook isn't, it 
could be sending just 'joe' or 'NFS03\joe' or something else entirely.

Rowland