Comment 17 for bug 208750

Interestingly enough, I installed proftpd locally and it works fine.
First is the Ubuntu server, then the BSD one

I used the same daemon version for comparison purposes. No idea what the difference in response is apart from the custom server name.

Still the Ubuntu one works, the BSD one does not.

Connected to localhost.
220 ProFTPD 1.3.1 Server (Debian) [127.0.0.1]
Name (localhost:xxx): xxx
331 Password required for xxx
Password:
230 User xxx logged in
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> bye
221 Goodbye.

Connected to tokra
220 ProFTPD 1.3.1 Server (BSD) [192.168.0.6]
Name (tokra:xxx): xxx
331 Password required for xxx
Password:
230 User xxx logged in
Remote system type is UNIX.
Using binary mode to transfer files.
ftp>