Unknown protocol identifier

I can make the connection ...

can anyone help me? pls

Connected, waiting for authentication
Protocol error: Unknown protocol identifier (0x50 0x50 0x48). Most likely connected to the wrong port.
Connection to server closed.

Thanks
Maria Caroço

Please post the complete log.

Hello ...

Complete log ... hope is this!!

In FileZilla Server

FileZilla Server version 0.9.27 beta
Copyright 2001-2006 by Tim Kosse (tim.kosse@filezilla-project.org)
Connecting to server...
Connected, waiting for authentication
Protocol error: Unknown protocol identifier (0x50 0x50 0x48). Most likely connected to the wrong port.
Connection to server closed.

In SmartFTP

[22:41:23] SmartFTP v3.0.1023.4
[22:41:24] Resolving host name "mariacaroco.com"
[22:41:24] Connecting to 64.235.52.170 Port: 21
[22:41:25] Connected to mariacaroco.com.

thanks
Maria Caroço

Doesn't look like a problem with SmartFTP. Try a professional FTP server instead of Filezilla.