When I set sabnzbd on my domain and open it I get this error: Access denied - Hostname verification failed: https://sabnzbd.org/hostname-check
Posted by franciscus
My question: [custom-init] Files found, executing [custom-init] 01-set-port.sh: executing... [sab-preinit-port] sabnzbd.ini already on port=8081 — no-op [sab-preinit-port] hostwhitelist already current (sb-gluetun, sb-sabnzbd, ugreen-8800, ugreen-8800.local, vaultwardenxxxxxxx., 2cb894d4e067.local, vault.sparkbox.local, 807a08195dda.local, e71dceb70df8.local, 2695de937f2e.local) — no-op [sab-preinit-port] done [custom-init] 01-set-port.sh: exited 0 2026-09-22 11:41:41,477::INFO::[SABnzbd:1135] -------------------------------- 2026-09-22 11:41:41,478::INFO::[SABnzbd:1136] SABnzbd.py-5.1.3 2026-09-22 11:41:41,478::INFO::[SABnzbd:1137] Full executa …(cut here — the full chat went to Tom) SparkBox AI replied: Yep, same result. SABnzbd is healthy, but sabnzbd.xxxxxxx.de is still missing from hostwhitelist: text hostwhitelist already current (... vaultwarden.xxxxxxx.de, ...) The request reaches SAB through NPM, then SAB rejects it. The certificate isn’t the cause of this particular error. The important correction: adding the proxy host in NPM does not automatically add the hostname to SABnzbd’s whitelist. I don’t have a documented SparkBox setting that links an NPM hostname to that generated list, so I won’t send you hunting through menus that may not exist. For a direct workaround, use: text http://<NAS-IP:8186 …(cut here — the full chat went to Tom) What I still need help with: (describe what didn't work or what's still broken)
3 replies
Chris wrote:
I’m sorry—the earlier AI reply sent you toward a direct workaround and treated this as a manual whitelist entry. The supported SparkBox path rebuilds SABnzbd’s allowed host names when the media stack starts, including the box hostname, its .local name, a configured SparkBox custom domain, and the Tailscale name; you should not need to hand-edit sabnzbd.ini. The fix for this hostname-check problem is already shipped. Please run: sudo sparkbox update then sudo sparkbox up Then open the same domain again. If it still fails, tell me whether that domain was added through SparkBox’s Custom Domains page or manually in Nginx Proxy Manager, and share only the relevant error line with the domain redacted. I’ve corrected this guidance so the unsupported workaround is not repeated to the next person.
franciscus wrote:
Access denied - Hostname verification failed: https://sabnzbd.org/hostname-check I installed it through cloudflare, I have at least 11 apps who are working this way. In sabnzbd it gives this error: vor ein paar Sekunden Verbindung vom Host "sabnzbd.xxxxxx.de" abgelehnt von: ::ffff:172.20.0.1 (X-Forwarded-For: 91xxxxxx1) [Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36]
franciscus wrote:
Got it: Über die SABnzbd-Oberfläche: Öffne SABnzbd zunächst über die lokale IP-Adresse, z. B. http://1xxxxxx:8080. Gehe zu Config/Einstellungen → Special/Spezial. Suche nach Host whitelist. Trage dort nur den Hostnamen deiner Domain ein, ohne https:// und ohne Pfad oder Port