220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
220-You are user number 1 of 5000 allowed.
220-Local time is now 09:19. Server port: 21.
220-IPv6 connections are also welcome on this server.
220 You will be disconnected after 15 minutes of inactivity.
USER xxxxx
331 User xxxxx OK. Password required
PASS (隐藏)
530 Authentication failed, sorry
连接失败