You probably need to renew your LetsEncrypt, with your Nethservers FQDN inside.
And that name must be entered in your external DNS, otherwise LetsEncrypt won’t accept it, nor will NextCloud/OnlyOffice work outside your Network…
Obviously that’s a solution, I don’t have a DNS registered for oplfar.mydomain.it. However the registered DNS “neth.mydomain.it” works correctly for the Server manager, for Nethvoice and also Nextcloud and the server always has the FQDN (oplfar.mydomain.it).
Yes, by setting the host you can use a different name.
Can you access onlyoffice at https://oplfar.mydomain.it:8082 ?
I recommend to set a public DNS entry and setup a valid certificate to be able to use Onlyoffice outside of your LAN without issues.
If that’s not possible at all, you can disable the certificate check, see onlyoffice [NethServer Wiki]
I tried everything. Installation, reinstallation, yes or not certificate, recreate database…
Before Onlyoffice, I had also tried Collabora but without success.
Could it be that the two installations don’t go together? However, before installing onlyoffice I uninstalled Collabora.
If I want to uninstall everything and then start from 0 with other version?
But thinking about it, what I say doesn’t make sense…
In LAN everything works well.
Boh… I don’t know…
I started from 0 and reinstalled everything. FQDN server (opllfar), DNS pubblico (neth)…
There is a valid let’s certificate
Port 8082 and Onlyoffice aren’tt reachable from internet, but other everything work well.
In LAN using public DNS, Onlyoffice and port 8082 works well…
There aren’t Nextcloud Office or Collabora.
From internet DNS “neth” work well for all except for OnlyOffice.
Sorry, but I can’t do more than that. Do you need some logs or something else?