lftp无法连接到IIS

我无法使用lftp连接到IIS，如下所示：

<--- 200 Language is now English, UTF-8 encoding. ---> OPTS UTF8 ON <--- 200 OPTS UTF8 command successful - UTF8 encoding now ON. ---> HOST xxxx <--- 504 Server cannot accept argument. ---> USER bla <--- 331 Password required for hgtrf. ---> PASS blabla <--- 230 User logged in. ---> PWD <--- 257 "/" is current directory. ---> PBSZ 0 <--- 200 PBSZ command successful. ---> PROT P <--- 534 Policy denies SSL. ---> PASV <--- 227 Entering Passive Mode (xxxx,194,118). ---- Connecting data socket to (xxxx) port 49782 **** Socket error (Connection refused) - reconnecting ---> LIST ---> ABOR ---- Closing aborted data socket ---- Closing control socket 

我可以使用标准的ftp命令连接，列出，检索和发送文件。 你有什么build议吗？

 lftp -d -u user,password -e "set ftp:ssl-allow no" server-address