Error obtaining SSL certificate for subdomain whith - example oai-test.mycompany.net

[antohis911]

Checklist

• Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
  • Yes /
• Are you sure you're not using someone else's docker image?
  • Yes /
• Have you searched for similar issues (both open and closed)?
  • Yes /

Describe the bug

Nginx Proxy Manager Version

[v2.14.0]

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

Screenshots

Operating System
ubuntu 24.04

Additional context

[franconianmetal]

as well error trying to obtain LE-cert for ddnss.de

[gggf-maker]

Nginx Proxy Manager Version

[v2.14.0]

Problem getting a new certificate for a subdomain

Screenshots

Operating System
Ubuntu 20.04.6

Additional context
log file

2026 03 16 02 44 33 574.txt