After more than a year using Ubuntu 14.04 perfect server and ISPConfig 3.1.1 I am still having a problem. The unique user that i can connect with Bitvise FTP and SSH Telnet client (as also with the other ftp/ssh software clients) . I have analized and tried all the suggestions at forums to create an sftp user (as we have many websites under this server). Tried to create via ISP an ftp user, a shel user, etc but nothing works. Tried to install pureftp-common and etc and also nothing works. How can i have a sftp user and directory siple working?