The Outgoing server (SMTP) %S does not seem to support encrypted passwords. If you just set up the account, try changing the 'Authentication method' in 'Account settings | Outgoing server (SMTP)' to 'Normal password'.
发件服务器（SMTP） %S 似乎不支持加密过的密码。如果您刚设置好这个账号，请尝试将“账号设置 | 发件服务器（SMTP）”中的“验证方式”更改为“普通密码”。