使用 filezilla 连接到我的 Web 服务器时，出现此错误：
Status: Resolving address of ftp.mysite.org.in
Status: Connecting to 199.199.199.18:21...
Status: Connection established, waiting for welcome message...
Response: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response: 220-You are user number 1 of 150 allowed.
Response: 220-Local time is now 17:58. Server port: 21.
Response: 220-This is a private system - No anonymous login
Response: 220-IPv6 connections are also welcome on this server.
Response: 220 You will be disconnected after 5 minutes of inactivity.
Command: AUTH TLS …