[Samba] Samba AD - "No logon servers available"

Rowland Penny rpenny at samba.org
Thu Dec 29 16:34:59 UTC 2016

On Thu, 29 Dec 2016 17:21:19 +0100
Marc Muehlfeld via samba <samba at lists.samba.org> wrote:

> Hello Bruno,
> Am 29.12.2016 um 17:01 schrieb Bruno Miguel Martins via samba:
> > I've migrated from Samba NT4 to Samba AD, joined other Windows
> > DC's to the domain and then demoted my Samba DC.
> > 
> > I am not being able to login from client computers with the
> > error stated on the subject. I've tried everything, from making
> > sure replication is OK, client DNS configuration also.
> > Registry modifications from prior Samba NT4 domain were
> > reverted in the client.
> > 
> > Are there any hints on what to do next?
> You're only having Windows DCs left?
> May I ask why you migrated from Samba AD to Windows?
> It sounds like the _ldap DNS record is missing, Windows uses to locate
> the DC. Can you please verify that all required _ldap/_kerberos
> records exist in the correct zones. For some examples, see:
> https://wiki.samba.org/index.php/Setting_up_Samba_as_an_Active_Directory_Domain_Controller#Verifying_DNS
> or because you are no longer a Samba user: ;-)
> https://technet.microsoft.com/en-us/library/cc961719.aspx
> If all required records exist and logging in still fails, I continue
> guessing that it is DNS related:
> - At least one of the Windows DCs runs a DNS server?
> - The clients are using the DNS on the Windows DC?
>   Test by running on a client
>   > ping Short_DC_Name
> Regards,
> Marc

I mis-read that, I thought he had removed the old NT4-style PDC, but if
he now has (as Marc thinks) no Samba DCs and is only using windows DCs,
I fail to see how this can be a Samba problem or how it can be fixed
from Samba, or am I missing something ?


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