The maildir path does not point to ~/users/example

id:content-path-folder-off

This error indicates that the qmail file contains a path to a maildir which is not a path to the corresponding maildir.

This bypasses the standard mailsetup and you need to check manually how to want to set this up.

Error

Error: This configuration is probably not working as expected in the standard mail system. This is why you should recreate this mailaddress yourself using the uberspace mail commands.