yhfyl123

WinSock 2.0 -- OpenSSL 0.9.8g 19 Oct 2007
[右] 正在连接到 nbclub.vicp.net -> DNS=nbclub.vicp.net IP=61.191.55.71 PORT=21
[右] 已连接到 nbclub.vicp.net
[右] 220 Serv-U FTP Server v6.4 for WinSock ready...
[右] USER nbclub
[右] 421 Too many users - please try again later.
[右] 连接失败
[右] 正在延迟 120 秒, 之后将尝试第 1 次重新连接
[右] 正在连接到 nbclub.vicp.net -> DNS=nbclub.vicp.net IP=61.191.55.71 PORT=21 (尝试 # 1)
[右] 已连接到 nbclub.vicp.net
[右] 220 Serv-U FTP Server v6.4 for WinSock ready...
[右] USER nbclub
[右] 421 Too many users - please try again later.
[右] 连接失败
[右] 正在延迟 120 秒, 之后将尝试第 2 次重新连接

怎么回事啊？