OnlyOffice mit externem Document Server

Hallo zusammen,

ich möchte von einer NC Installation auf Rechner 1 mittels OnlyOffice den Document Server eines adneren Rechners nutzen.

Konfiguration Rechner 1 (ich nenne ihn mal OnlyOffice client):

NC 19 mit gültigem Zertifikat
OnlyOffice app installiert - Funktionsprüfung mit dem öffentlichen Server war erfolgreich.
Serviceadresse der Dokumentbearbeitung
https://Rechner2/index.php/apps/documentserver_community/
Serveradresse für interne Anforderungen vom Dokumentbearbeitung-Service
https://Rechner2/

Konfiguration Rechner 2 (entsprechend der Server)

NC 19 mit gültigem Zertifikat
OnlyOffice app und Document server installiert.
Serviceadresse der Dokumentbearbeitung
https://Rechner2/index.php/apps/documentserver_community/
Serveradresse für interne Anforderungen vom Dokumentbearbeitung-Service
https://Rechner2/

OnlyOffice funktioniert auf dem Rechner 2 als lokale Installation. Ich kann Dokumente wie gewünscht bearbeiten.

Wenn ich vom Rechner 1 aus den Rechner 2 als Server angeben möchte erhalte ich folgende Meldung (ServerAdresse angepasst):

[onlyoffice] Error: GuzzleHttp\Exception\ClientException: Client error: `POST https://Rechner2/index.php/apps/documentserver_community/coauthoring/CommandService.ashx` resulted in a `403 Forbidden` response:
<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <style type="text/css">
            html, body, (truncated...)
 at <<closure>>

 0. /var/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php line 65
    GuzzleHttp\Exception\RequestException::create(GuzzleHttp\Psr7\Request {}, "*** sensitive parameter replaced ***")
 1. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php line 203
    GuzzleHttp\Middleware::GuzzleHttp\{closure}("*** sensitive parameters replaced ***")
 2. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php line 156
    GuzzleHttp\Promise\Promise::callHandler(1, "*** sensitive parameter replaced ***", [GuzzleHttp\Prom ... l])
 3. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/TaskQueue.php line 47
    GuzzleHttp\Promise\Promise::GuzzleHttp\Promise\{closure}("*** sensitive parameters replaced ***")
 4. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php line 246
    GuzzleHttp\Promise\TaskQueue->run(true)
 5. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php line 223
    GuzzleHttp\Promise\Promise->invokeWaitFn()
 6. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php line 267
    GuzzleHttp\Promise\Promise->waitIfPending()
 7. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php line 225
    GuzzleHttp\Promise\Promise->invokeWaitList()
 8. /var/www/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php line 62
    GuzzleHttp\Promise\Promise->waitIfPending()
 9. /var/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php line 183
    GuzzleHttp\Promise\Promise->wait()
10. /var/www/nextcloud/lib/private/Http/Client/Client.php line 299
    GuzzleHttp\Client->request("post", "https://only-of ... x", {verify: "/var/c ... e})
11. /var/www/nextcloud/apps/onlyoffice/lib/documentservice.php line 355
    OC\Http\Client\Client->post("https://only-of ... x", {headers: {Conte ... 0})
12. /var/www/nextcloud/apps/onlyoffice/lib/documentservice.php line 291
    OCA\Onlyoffice\DocumentService->Request("https://only-of ... x", "post", {headers: {Conte ... 0})
13. /var/www/nextcloud/apps/onlyoffice/controller/settingscontroller.php line 301
    OCA\Onlyoffice\DocumentService->CommandRequest("version")
14. /var/www/nextcloud/apps/onlyoffice/controller/settingscontroller.php line 165
    OCA\Onlyoffice\Controller\SettingsController->checkDocServiceUrl()
15. /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 170
    OCA\Onlyoffice\Controller\SettingsController->SaveAddress("https://only-of ... /", "", "https://Rechner2/", false, "", false)
16. /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 100
    OC\AppFramework\Http\Dispatcher->executeController(OCA\Onlyoffice\C ... {}, "saveAddress")
17. /var/www/nextcloud/lib/private/AppFramework/App.php line 137
    OC\AppFramework\Http\Dispatcher->dispatch(OCA\Onlyoffice\C ... {}, "saveAddress")
18. /var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php line 47
    OC\AppFramework\App::main("SettingsController", "saveAddress", OC\AppFramework\ ... {}, {_route: "onlyof ... "})
19. <<closure>>
    OC\AppFramework\Routing\RouteActionHandler->__invoke({_route: "onlyof ... "})
20. /var/www/nextcloud/lib/private/Route/Router.php line 297
    call_user_func(OC\AppFramework\ ... {}, {_route: "onlyof ... "})
21. /var/www/nextcloud/lib/base.php line 1012
    OC\Route\Router->match("/apps/onlyoffice/ajax/settings/address")
22. /var/www/nextcloud/index.php line 37
    OC::handleRequest()

PUT /index.php/apps/onlyoffice/ajax/settings/address
from XXX.5.234.242 by torsten at 2020-09-08T06:25:12+00:00

Hat jemand eine Idee?