Custom domain ignored error | Home Assistant | Page 1

queen delta Sep 12, 2025, 7:56 PM

I've had Home Assistant Cloud working with my custom domain since the first week of May this year, but it was disabled today with the following message (true domain name obscured):

The DNS configuration for your custom domain (home.ABC.org) is not correct. This domain has now been ignored and will not be used for Home Assistant Cloud. If you want to use this domain, please fix the DNS configuration and restart Home Assistant. If you do not need this anymore, you can remove it from the account page.

The remote access url is (obfuscated in the middle):
https://tzw3zXXXe7rp38.ui.nabu.casa

and the CNAME record is (likewise obfuscated in the middle):
tzw3z2XXXe7rp38.ui.nabu.casa

I use cloudflare for dns. I tried disabling and re-enabling remote access and restarting with no luck. I can see my instance using the nabu casa url.

Is this also why my backups aren't always uploading, with tls handshake errors? Today's uploaded fine, though.

As a follow up question, I've got a Hetzner vps that I use to route incoming https requests to lxc's and vm's on a proxmox server in my LAN via tailscale, where my home assistant server also lives. Would any problems arise with Home Assistant Cloud services if I pointed my home.ABC.org domain to my HA instance myself? I do not have any certificates on my HA instance, it's straight http.

Also, my CNAME record is DNS only, no proxy, auto for TTL (5 mins for cloudflare).

queen delta Sep 12, 2025, 8:33 PM

Figured out how to use my own, had to add this and it worked:

http:
  use_x_forwarded_for: true
  trusted_proxies:
    - 10.1.x.y  # IP address of reverse proxy

I'll let you know if backups work/fail.

#Custom domain ignored error