[nsd-users] Hi! Im trying to set forward and reverse on an internal ip with nsd/unbound.

[Manuel Stausberg]

Hi,

I am not sure I understand what you are trying to do, and I know 
basically nothing about configuring mailservers, so take everything I 
say with a grain of salt...

Correct me if I'm wrong, but it looks like you are trying to set up 
reverse pointers for addresses in the 192.168.0.0/16 address space, 
which (apart from local testing of course) does not make a lot of sense 
from my point of view.

This address block is reserved for private use, and the corresponding 
name space in the DNS (168.192.in-addr.arpa.) is controlled by IANA.

So, you can of course create a zonefile with reverse pointers, it's just 
that no resolver will ask _your_ nameservers, they will ask IANA's 
nameservers.

Looking at the discussion, it feels a bit like we are dealing with a X/Y 
Problem (see xyproblem.info)- what exactly is it you are trying to achieve?

Best,
Manuel

On 31.07.25 18:02, tmberg via nsd-users wrote:
> On 2025-07-28 11:32, Manuel Stausberg via nsd-users wrote:
>> Hi,
>>
>>> https://starka.st/run/shm/bandwidth/tmberg/224.0.168.192.in- 
>>> addr.arpa.zone.txt
>>>
>>> https://starka.st/run/shm/bandwidth/tmberg/ 
>>> tMbERG_tMbERG_.224.starka.st.zone.txt
>>>
>>> https://starka.st/run/shm/bandwidth/tmberg/errors.txt
>>
>> the links are the same as before, but the files now look different...
>> Would be easier if you just include them here :)
>>
>> Btw. there seems to be no "errors.txt", I just see "tmberg" on that page.
>>
>> Best,
>> Manuel
>> _______________________________________________
>> nsd-users mailing list
>> nsd-users at lists.nlnetlabs.nl
>> https://lists.nlnetlabs.nl/mailman/listinfo/nsd-users
> 
> It loads and work. But as I said in my previous mail.
> 
> I want it to look like:
> 
> Received: from [tMbERG_tMbERG_.224.starka.st] 
> (tMbERG_tMbERG_.224.starka.st [tMbERG_tMbERG_.224.starka.st])
>          by mx.starka.st (mx.starka.st) with ESMTP id C46691BA5C
>          for <test-pu6fpd2ay at srv1.mail-tester.com>; Thu, 31 Jul 2025 
> 17:48:33 +0200 (CEST)
> 
> When sending mail. ( for example )
> 
> Instead of:
> 
> Received: from [192.168.0.224] (tMbERG_tMbERG_.224.starka.st 
> [192.168.0.224])
>          by mx.starka.st (mx.starka.st) with ESMTP id C46691BA5C
>          for <test-pu6fpd2ay at srv1.mail-tester.com>; Thu, 31 Jul 2025 
> 17:48:33 +0200 (CEST)
> 
> But can it be done?
> 
> Realying via my isp.
> 
> /T
>