I am using the Nextcloud add-on 1.8 with Thunderbird 52.9.1. I am not able to configure the add-on properly with the correct syntax for the Nextcloud server name.
First part of the problem:
Using https://my.server.name, Port 443 and my user id I receive message “Beim Einrichten des Kontos trat ein Fehler auf”. According to Apache access.log the error behind that is an HTTP 401. The add-on never asked me for a password.
192.168.xxx.xxx - email@example.com [19/Dec/2018:08:15:17 +0100] “GET /ocs/v1.php/cloud/user?format=json HTTP/1.1” 401 875 “-” “Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1”
Second part of the problem:
Using http://my.server.name, Port 443 and my user id, the account can be configured (again without requesting my password - it is not clear to me how it can authenticate this way). Creating mail attachments works, but: the generated link starts with http:// rather than https:// The generated link does not work because http is not allowed on our server.
The server mentioned above is located behind a reverse proxy which has a public IP address and a proper DNS entry, and works fine so far with Nextcloud.