7 Jun
2024
7 Jun
'24
1:39 p.m.
Hi Razvan,
You can either use the subdomain that you requested and received via the portal:
yo6rzv.ampr.org <http://yo6rzv.ampr.org/>
Any A records you add under that will automatically create a PTR record in the reverse
zonefile.
However if you wish to use your own domain then you will need to request reverse DNS is
delegated to your servers by opening a ticket on the portal: “Help with DNS"
73,
Chris - G1FEF
—
ARDC Administrator
Web: https://www.ardc.net
On 7 Jun 2024, at 14:13, Razvan YO6RZV via 44net
<44net(a)mailman.ampr.org> wrote:
Hello everyone,
I have a question for those of you who have BGP announced subnets from 44Net,
specifically regarding the configuration of rDNS (PTR) records for each IP address within
the subnet.
Recently, I received an allocation of a /24 subnet, which is announced via my Data
Center's ASN. Everything is functioning correctly, but I need to configure rDNS for
each IP address. This configuration is essential for hosting email servers to prevent
potential issues.
Here is a dlint output for my gateway's IP address:
root@eye:~# dlint 1.77.32.44.in-addr.arpa
;; dlint version 1.4.0, Copyright (C) 1998 Paul A. Balyoz <pab(a)domtools.com>
;; Dlint comes with ABSOLUTELY NO WARRANTY.
;; This is free software, and you are welcome to redistribute it
;; under certain conditions. Type 'man dlint' for details.
;; command line: /usr/bin/dlint 1.77.32.44.in-addr.arpa
;; flags: inaddr-domain recursive.
;; using dig version 9.9.5
;; run starting: Fri Jun 7 15:10:37 EEST 2024
;; ============================================================
;; Now linting 1.77.32.44.in-addr.arpa
ERROR: no name servers found for domain 1.77.32.44.in-addr.arpa
===
;; Now linting 32.44.in-addr.arpa
;; Checking serial numbers per nameserver
;; 2024060700 ns1.de.ardc.net.
;; 2024060700 ns.ardc.net.
;; 2024060700 a.gw4.uk.
;; 2024060700 ns2.us.ardc.net.
===
Based on this output, I believe that the rDNS setup needs to be handled by the ARDC
staff. However, I wanted to confirm this to ensure I proceed correctly.
I reached out to Chris off-list and received the following response:
"You already have the subdomain yo6rzv.ampr.org setup; you can add DNS records under
there. For each A record, a PTR record is automatically added in the reverse zone."
From my understanding, this does not fully address my requirements, since for example, if
IP Address 44.32.77.2 needs to have the rDNS set to -> something.yo44.net, this will
not help.
I am aware that Chris and the ARDC staff are currently handling a high volume of tickets
and requests through the portal. Therefore, I am turning to the community for assistance
to avoid adding more to their workload.
I appreciate any guidance you can provide and apologize in advance if this question has
been addressed previously. I could not find relevant information in my email archive.
Thank you for your assistance.
Best regards,
Razvan - YO6RZV
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