[Samba] Provisioning new AD Domain Controller

[bd730c5053df9efb]

I stand corrected, PTR records don't point to IP addresses, the point to fqdn names, My previous statement was a mix up, sorry.

The reverse zone names have a tld in the .arpa domain and are named with that special naming convention, a reverse lookup zone is named including the "subdomain" to which the ip belongs so that the ip address 192.168.123.2/24 is named 2.123.168.192.in-addr.arpa and belongs to the zone 123.168.192.in-addr.arpa and the ip address 192.168.123.2/16 belongs to the zone 168.192.in-addr.arpa as Rowland indicated in his mail.

Your first command works correctly becasue you're trying to resolve a single IP address that resolves in a reverse DNS zone, the second one doesnt because you're querying a whole zone for it's PTR record and it doesn't have one.

Best regards,
Dave.

Sent with Proton Mail secure email.

On Thursday, November 30th, 2023 at 16:07, Mark Foley via samba <samba at lists.samba.org> wrote:


> On Nov 30 13:30:38 2023 bd730c5053df9efb via samba samba at lists.samba.org wrote:
> 
> > It is correct as is. PTR records point to IP addresses and reverse zones get that in-addr.arpa naming.
> > 
> > Best regards,
> > Dave.
> 
> 
> OK, but normally the rDNS PTR is the reverse of the regular IP. In the example,
> the IP 10.99.0.1, but the wiki example PTR has only 0.99.10 and leaves off the
> '1' from the final octet.
> 
> For example, my IP is 24.142.169.12. If I look that up I get:
> 
> # host 24.142.169.12
> 12.169.142.24.in-addr.arpa domain name pointer novatec-inc.com
> 
> All 4 octets shown. If I just try with the top 3 octets I get:
> 
> # host 24.142.169
> Host 24.142.169 not found: 3(NXDOMAIN)
> 
> Maybe this is something special for the DC, but I've always seen and used all 4
> ipv4 octets in rDNS PTR records.
> 
> Just checking ...
> 
> > PS: I'm also resending this one
> 
> 
> I am getting both your messages. Don't know why your getting some indicator that
> you need to resend.
> 
> --Mark
> 
> > On Thursday, November 30th, 2023 at 15:05, Mark Foley via samba samba at lists.samba.org wrote:
> > 
> > > The wiki https://wiki.samba.org/index.php/Setting_up_Samba_as_an_Active_Directory_Domain_Controller#Create_a_reverse_zone
> > > says, "For a DC with the FQDN of dc1.samdom.example.com and the
> > > ipaddress of 10.99.0.1, to add a record to the 0.99.10.in-addr.arpa ..."
> > > 
> > > Is this correct or should the rDNS PTR be 1.99.10.in-addr.arpa?
> > > 
> > > I just want to make sure this isn't a typeo.
> > > 
> > > Thanks --Mark
> > > 
> > > --
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> 
> 
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