Error Connecting

I get this...

[02:21:06] 220---------- Welcome to Pure-FTPd [TLS] ----------
[02:21:06] 220-You are user number 2 of 50 allowed.
[02:21:06] 220-Local time is now 02:21. Server port: 21.
[02:21:06] 220-IPv6 connections are also welcome on this server.
[02:21:06] 220 You will be disconnected after 15 minutes of inactivity.
[02:21:06] USER anonymous
[02:21:06] 421 Unable to set up secure anonymous FTP
[02:21:06] Server closed connection

I get the connection and lose it just as fast...I gave it my username and password and I inputed the correct address.