Tengo un problema, quiero usar SmartFTP para subir los archivos a mi servidor... pero me tira esto.. sera el puerto que utilizo ? uso el 21 por defecto


[22:12:09] Connection attempt 4...
[22:12:09] Resolving host name "ftp.webcindario.com"
[22:12:09] Connecting to 89.17.220.55 Port: 21
[22:12:09] Connected to ftp.webcindario.com.
[22:12:10] 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
[22:12:10] 220-You are user number 28 of 100 allowed.
[22:12:10] 220-Local time is now 03:13. Server port: 21.
[22:12:10] 220-This is a private system - No anonymous login
[22:12:10] 220 You will be disconnected after 3 minutes of inactivity.
[22:12:10] USER     institutovitioli
[22:12:10] 331 User _institutovitioli OK. Password required
[22:12:10] PASS (hidden)
[22:12:11] 530 Login authentication failed
[22:12:11] Active Help: http://www.smartftp.com/support/kb/51
[22:12:11] QUIT
[22:12:15] 221-Goodbye. You uploaded 0 and downloaded 0 kbytes.
[22:12:15] 221 Logout.
[22:12:15] Se ha forzado la interrupción de una conexión existente por el host remoto.
[22:12:15] Connect failed. Waiting to retry (30s)...
[22:12:15] Client closed the connection.

Acabo de probar en mi espacio usando SmartFTP y no tengo problemas. También uso el puerto 21.
Revisa si estás colocando la contraseña correcta y si no tienes instalado algún Firewall que te esté impidiendo el uso normal de ese cliente de FTP.