Home / ubuntu / Questions / 1154464
In Process
Trect
Asked: 2019-06-28 09:05:03 +0800 CST

How do I add a TXT or A record using Unbound?

  • 772

I am currently following this tutorial. The author says we can add a TXT record on the local DNS resolver. But can I please know how do I do that?

How do I add a TXT or A record on the local server (127.0.0.1) using unbound?

System - Ubuntu 18.04 (AWS EC2 Instance).

server command-line dns 18.04 bind

3 Answers

  1. "The author says we can add a TXT record on the local DNS resolver." The author does not say that.

    unbound is a recursive validating resolver. Its purpose is just to resolve names, by querying other nameservers. It has no data itself on names, just what it retrieves.

    Adding a TXT record needs to happen on the authoritative nameservers for the zone, which by definition can not be unbound.

    So you need to find out the nameservers for the zone where you want to add a TXT record for DKIM purposes, and change the zonefile there. Probably through some website or API offered by the provider currently managing your authoritative nameservers.

    • 0

  2. Following the Unbound documentation, you can add a TXT record as local data.

    An example of this: (adding both an A and a TXT record for a subdomain)

    local-zone: "somedomain.country." static
local-data: "sub1.somedomain.country. IN A 127.0.0.1"
local-data: 'sub1.somedomain.country. IN TXT "f1=this is a TXT record; f2=second part of TXT record"'

    Please note that the outer quotes when adding a TXT record should be single quotes, since the TXT records itself is in double quotes.

    • 0

  3. In unbound configuration there is option to use 'local-zone' and 'local-data' sections. In server: section you specify something along the lines of:

        local-zone: "somedomain.country." redirect
    local-data: "d1.somedomain.country. IN A <IP redacted>"
    local-data: 'somedomain.country. TXT "txt record data "'

    Note the use of double quotes for TXT record itself and single quotes for local-data parameter

    For more - see Unbound documentation.

    • -1