WinSock 2.0
正在连接到 yourour.com 通过代理
220 Serv-U FTP Server v6.0 for WinSock ready...
331 User name okay, need password.
PASS (hidden)
230 User logged in, proceed.
SYST
215 UNIX Type: L8
PWD
257 "/" is current directory.
TYPE A
200 Type set to A.
PASV
550 Passive mode not allowed on this server.
PORT 192,168,22,62,7,143
530 Only client IP address allowed for PORT command.
LIST
150 Opening ASCII mode data connection for /bin/ls.
226-Maximum disk quota limited to 104857600 kBytes
  Used disk quota 21092002 kBytes, available 83765597 kBytes
226 Transfer complete.
TYPE I
200 Type set to I.
PASV
550 Passive mode not allowed on this server.
PORT 192,168,22,62,7,145
530 Only client IP address allowed for PORT command.
传输已失败！
PASV
550 Passive mode not allowed on this server.
PORT 192,168,22,62,7,146
530 Only client IP address allowed for PORT command.
传输已失败！
PASV
550 Passive mode not allowed on this server.
PORT 192,168,22,62,7,147
530 Only client IP address allowed for PORT command.
传输已失败！
PASV
550 Passive mode not allowed on this server.
PORT 192,168,22,62,7,148
530 Only client IP address allowed for PORT command.
传输已失败！
TYPE A
200 Type set to A.
PASV
550 Passive mode not allowed on this server.
PORT 192,168,22,62,7,149
530 Only client IP address allowed for PORT command.
LIST
150 Opening ASCII mode data connection for /bin/ls.
226-Maximum disk quota limited to 104857600 kBytes
  Used disk quota 21092002 kBytes, available 83765597 kBytes
226 Transfer complete.
上传时候出现的

大概，跟你内网的IP有关系~~你用PORT的IP和服务器接受的IP不同~~
试试看改改Site Options，说不定会有些改观~~~

瞎猜的~~~:p