TIDFtp设置连接代理服务器问题,帮帮忙在线等待

delhi6编FTP下载模块,代理服务器为WINGATE,端口无限制,
with IdFTP1 do
  begin
    try
      if Connected then  Quit;
    finally
      Host:='132.97.19.1';
      Port:=21;
      user:='adi';
      Password:='sp';
      socksinfo.Host:='192.168.0.253';
      socksinfo.Port:='21';
     end;
      Connect;
  end;
错误提示"no route to host"
本机系统登录到本地,ip:192.168.0.203
能PING通192.168.0.253