I have moved my FTP (running proftpd) server from Ubuntu 18.04 to Ubuntu 20.04 server and now there is a problem when connecting to it. In connection log there is a line that says:
"Status: Server does not support non-ASCII characters."
and all files and folders that have non-ASCII characters cannot be downloaded.
I can fix this client-site by setting my FTP client (FileZilla for example) to explicitly use UTF-8 but the problem will still be there for others who connect to the FTP.
proftpd-basic/focal,now 1.3.6c-2 amd64 [installed,automatic] proftpd-doc/focal,now 1.3.6c-2 all [installed,automatic] proftpd-mod-mysql/focal,now 1.3.6c-2 amd64 [installed]
Does anyone know what may be that cause for this error and how it can be fixed?