[Samba] Winbind / Samba auth problem after username change

Julian Zielke jzielke at next-level-integration.com
Tue Sep 6 08:46:31 UTC 2016

Hi Rowland,

we're using the Windows mmc for administrating samba sernet DCs running samba-sernet-ad 4.2.11-9.
4 Domain controllers are present. Primary DC replicates to a second in our local office and to 2 others in a vpn connected network.
Changes are made on our primary dc always. DC 3 and 4 and the primary and secondary DC responsible for ssh authentication on our linux boxes
having the problem.


-----Ursprüngliche Nachricht-----
Von: samba [mailto:samba-bounces at lists.samba.org] Im Auftrag von Rowland Penny via samba
Gesendet: Dienstag, 6. September 2016 10:31
An: samba at lists.samba.org
Betreff: Re: [Samba] Winbind / Samba auth problem after username change

On Tue, 6 Sep 2016 08:17:12 +0000
Julian Zielke via samba <samba at lists.samba.org> wrote:

> Hi,
> before we switched to SSSD we've been implementing the ssh
> authentication method via Domain using winbind+samba. Version
> installed on our machines is (still) 2:4.1.6+dfsg-1ubuntu2.14.04.13.
> So far everything has been working fine, however after we had to
> change a user's logon name in the domain he can't login anymore.
> auth.log shows still his old username followed by "from <IP> not
> allowed because none of user's groups are listed in AllowGroups". I
> searched several websites for a solution but only found
> recommendations on deleting the winbind cache at /var/lib/samba.
> However this didn't fix the problem. When I do a grep using getent
> passwd on the users NEW name, it shows up. So actually the domain
> controllers is delivering the correct username.
> Is this a known bug in version 4.1.6 or can I solve this any other way
> without running a package upgrade on a production machine?
> Cheers
> Julian

How did you change the users logon name ?
Have you checked the users object in AD ?


To unsubscribe from this list go to the following URL and read the
instructions:  https://lists.samba.org/mailman/options/samba
Wichtiger Hinweis: Der Inhalt dieser E-Mail ist vertraulich und ausschließlich für den bezeichneten Adressaten bestimmt. Wenn Sie nicht der vorgesehene Adressat dieser E-Mail oder dessen Vertreter sein sollten, so beachten Sie bitte, dass jede Form der Kenntnisnahme, Veröffentlichung, Vervielfältigung oder Weitergabe des Inhalts dieser E-Mail unzulässig ist. Wir bitten Sie, sich in diesem Fall mit dem Absender der E-Mail in Verbindung zu setzen. Wir möchten Sie außerdem darauf hinweisen, dass die Kommunikation per E-Mail über das Internet unsicher ist, da für unberechtigte Dritte grundsätzlich die Möglichkeit der Kenntnisnahme und Manipulation besteht

Important Note: The information contained in this e-mail is confidential. It is intended solely for the addressee. Access to this e-mail by anyone else is unauthorized. If you are not the intended recipient, any form of disclosure, reproduction, distribution or any action taken or refrained from in reliance on it, is prohibited and may be unlawful. Please notify the sender immediately. We also would like to inform you that communication via e-mail over the internet is insecure because third parties may have the possibility to access and manipulate e-mails.

More information about the samba mailing list