[Help] - I can't resolve my ddns even within the container itself

[Ricoldi]

Please, I apologize for asking here, but I don't know how to solve this, and I don't know who to ask or where to search.

I registered the DDNS through the web interface using "DNS Host Entries" and set it to my home IP. I should mention that I'm running this container on a cloud VPS. When I ping my IP, it works fine, but when I test it through DDNS, I get this error. It seems like it's not registering correctly inside the container.

I'm using this container and created a DDNS. When I test inside the container itself with the command:

dig @127.0.0.1 test.mydomain.app.br

the response was:

`
; <<>> DiG 9.18.24-1-Debian <<>> @127.0.0.1 test.mydomain.app.br
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 31232
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: cb5e3cfcf878f7c00100000067e6153b40bdef11dae4ad00 (good)
;; QUESTION SECTION:
;test.mydomain.app.br. IN A

;; AUTHORITY SECTION:
mydomain.app.br. 86400 IN SOA ns1..mydomain.app.br. admin.mydomain.app.br. 2024032601 3600 1800 604800 86400

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Fri Mar 28 03:19:23 UTC 2025
;; MSG SIZE rcvd: 122
`

My test DNS server responded with NXDOMAIN, which means it does not have a record for test.mydomain.app.br. However, it returned an SOA (Start of Authority) for mydomain.app.br, indicating that the zone is configured, but the subdomain does not exist.

I appreciate any possible help, thank you very much to everyone