Hello! I am using Joplin mobile client for Android version 2.8.1. I have been syncing to the cloud using nextcloud (version 23) and that has worked great for me since I started using it. I turned a friend onto Joplin and he is trying to sync to his Briefcase on a Zimbra mail server running version 8.8.15_P33. We used the WebDAV URL in the zimbra client as suggested and had no luck.
The Zimbra client suggested the WebDAV URL of: https ://firstname.lastname@example.org/Briefcase/Joplin - after we created the Joplin folder in the Briefcase. The errors always suggest userID or password issue, the specific error we see is "PROPFIND: Unknown error 2 (401): (Code 401)". But the login id and password are correct. We checked that a few times by logging into the webmail client with the same credentials.
I looked around a few pages and found one user had success, so we copied his URL format: https
://email@example.com/Briefcase/Joplin but still get the same errors. Even tried another account to rule out bad password or ID. So after trying a few mixed versions of /firstname.lastname@example.org/Briefcase vs /home/user/Briefcase and /dav/user with no luck, I thought I would post here and see if anyone has had success syncing to Zimbra WebDAV with Joplin. If we figure it out, I will post back here. Thanks!