[Samba] reverse DNS not working for some reason ...

Mueller mueller at tropenklinik.de
Wed Nov 3 06:43:56 UTC 2021

If bind , bind_dlz then in fact you should create you reverse dns before you
join any windows pc.
Normally if all your settings are right the windows clients do there job and
register as they should.
In most cases if they will not it is usefull to restart bind and then it
will do.
On your windows 10  clients if they will not do  -->  open cmd as admin
than: ipconfig /registerdns , restart.
With your linux clients (samba 4 member server? They should be registered
after joining) not in your domain
you have to do everything by hand.


-----Ursprüngliche Nachricht-----
Von: Patrick Goetz via samba [mailto:samba at lists.samba.org] 
Gesendet: Dienstag, 2. November 2021 22:59
An: samba at lists.samba.org
Betreff: Re: [Samba] reverse DNS not working for some reason ...

On 11/2/21 16:29, Rowland Penny via samba wrote:
> On Tue, 2021-11-02 at 16:14 -0500, Patrick Goetz via samba wrote:
>> On 11/2/21 16:09, Rowland Penny via samba wrote:
>>> On Tue, 2021-11-02 at 15:53 -0500, Patrick Goetz via samba wrote:
>>>> On 11/2/21 15:32, Rowland Penny via samba wrote:
>>>>> On Tue, 2021-11-02 at 15:25 -0500, Patrick Goetz via samba
>>>>> wrote:
>>>>>> As per the Wiki instructions for setting up a Samba DC, I ran
>>>>>>       # samba-tool dns zonecreate samba-dc 1.168.192.in- 
>>>>>> addr.arpa -U administrator
>>>>>> (while samba-ad-dc was running)
>>>>> That is how you are supposed to do it.
>>>>>> on my domain controller.  Everything seems to work; I can bind
>>>>>> W10
>>>>>> machines to this domain, use RSAT, etc., but reverse DNS searches 
>>>>>> aren't
>>>>>> working:
>>>>> I refer you to my last reply, well sort of :-D
>>>>> You have to tell your Windows clients to update their dns records, 
>>>>> they do not do it as standard.
>>>> I set static IP/DNS entries on my Windows clients -- that's not 
>>>> sufficient?
>>> If you just set the forward (A) records, then no, you also have to 
>>> set the reverse (PTR) records in AD and tell your Windows clients to 
>>> use the reverse records.
>> The forward records are created automatically (I thought); I'm not 
>> doing anything I know of to facilitate this. You're saying the PTR 
>> records have to be entered by hand?  How does one go about doing 
>> this?  And if it's not necessary for anything, no reason to bother 
>> with it?
> No, Windows will do it, you just have to tick a box on the Windows 
> network device gui (if I remember correctly), something along the 
> lines of 'update this clients IP in dns'

What do I do for my linux domain members?

Also, I just checked on my domain bound W10 machine. Under

    Adapter Properties -> Internet Protocol version 4 (TCP/IPv4) -> Advanced
-> DNS Tab

    "Register this connector's addresses in DNS" is checked, but no go on
the reverse search:

root at samba-dc:~# host
Host not found: 3(NXDOMAIN)

If nothing uses the reverse search, I'm not going to worry about it.

> Rowland

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