>From the Debian people I got a hint:
After adding
utf8_filesystem=YES
to the vsftpd.conf I got the UTF8 in response to the FEAT command! So, problem
solved!
I consider it to be a kind of 'undocumented feature' since the setting
is missing in the man-page.
Also I assume the default of this
Public bug reported:
vsftpd does not support UTF-8 character on certain versions of
Ubuntu/Debian:
On Ubuntu 14.04 the response to the FEAT command contains UTF8.
On Ubuntu 15.04, 15.10 and Debian 8 the response to the FEAT command does not
contain UTF8 and the status message is:
'Status:
