Symptoms You have installed the ISPConfig server admi panel (in my case, version 3.0.5.3), all according to their guidelines called "The Perfect Server". In this case, I used the setup instructions for ISPConfig 3 on Debian 7.0 Wheezy with Apache2, BIND, Dovecot. Then you create a website in ISPConfig, create an FTP account for it … Continue reading How to fix “530 Login authentication failed” for ISPConfig FTP logins?