CNAME as an alias to a TXT record
Computerisms Corporation
bob at computerisms.ca
Mon Nov 4 21:31:18 UTC 2019
Hi,
Thank you very much for your response, much appreciated.
Still not working on the servers it needs to be working on, but have
reproduced your results in a test environment.
On 2019-11-04 12:42 p.m., m3047 wrote:
> I would expect so.
>
> HECATE:~ m3047$ dig points-to-m3047.net.m3047.
>
> ; <<>> DiG 9.8.3-P1 <<>> points-to-m3047.net.m3047.
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50873
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2
>
> ;; QUESTION SECTION:
> ;points-to-m3047.net.m3047. IN A
>
> ;; ANSWER SECTION:
> POINTS-TO-M3047.NET.m3047. 600 IN CNAME M3047.NET.
> m3047.net. 7200 IN A 209.221.140.128
>
> ;; AUTHORITY SECTION:
> m3047.net. 6334 IN NS dns1.encirca.net.
> m3047.net. 6334 IN NS dns2.encirca.net.
>
> ;; ADDITIONAL SECTION:
> dns1.encirca.net. 157334 IN A 108.166.170.106
> dns2.encirca.net. 157334 IN A 64.62.200.132
>
> ;; Query time: 69 msec
> ;; SERVER: 10.0.0.220#53(10.0.0.220)
> ;; WHEN: Mon Nov 4 12:40:17 2019
> ;; MSG SIZE rcvd: 197
>
> HECATE:~ m3047$ dig points-to-m3047.net.m3047. txt
>
> ; <<>> DiG 9.8.3-P1 <<>> points-to-m3047.net.m3047. txt
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46861
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2
>
> ;; QUESTION SECTION:
> ;points-to-m3047.net.m3047. IN TXT
>
> ;; ANSWER SECTION:
> POINTS-TO-M3047.NET.m3047. 600 IN CNAME M3047.NET.
> m3047.net. 7200 IN TXT "v=spf1 ip4:209.221.140.128/31
> +mx -all"
>
> ;; AUTHORITY SECTION:
> m3047.net. 6329 IN NS dns1.encirca.net.
> m3047.net. 6329 IN NS dns2.encirca.net.
>
> ;; ADDITIONAL SECTION:
> dns1.encirca.net. 157329 IN A 108.166.170.106
> dns2.encirca.net. 157329 IN A 64.62.200.132
>
> ;; Query time: 108 msec
> ;; SERVER: 10.0.0.220#53(10.0.0.220)
> ;; WHEN: Mon Nov 4 12:40:22 2019
> ;; MSG SIZE rcvd: 232
>
>
> On Mon, 4 Nov 2019, Computerisms Corporation wrote:
>> Hi,
>>
>> I am wondering if it is possible to create a CNAME in one zone to
>> resolve as a TXT record in another zone. Can't find anything that
>> says it will work, but can't find any thing that says it won't, either.
>>
>> For example, I have added in the zone file for dom1:
>>
>> _acme-challenge CNAME _acme-challenge.dom2.com.
>>
>> and then in zone file for dom2:
>>
>> _acme-challenge TXT "thisismytextvalue"
>>
>> Then, and more or less as expected, the following dig command fails to
>> return a record.
>>
>> dig -t TXT _acme-challenge.dom1.com
>>
>> Is there a way to get the dig command to return the TXT value for
>> dom2? Or is that something that can pretty much only happen with A
>> records?
>>
>>
>> --
>> Bob Miller
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