I created an user with:
useradd -m -s /bin/false testuser
Also I added in the vsftpd.user_list 'testuser' and changed the password with passwd. After a restart of the vsftpd service I wanted to log on on the server but I got the Error 530 (Login incorrect). Why can 't I log on on the server? With the default user, who was created on the installation of the server, it works. Why?