The Outgoing server (SMTP) %S does not allow plaintext passwords. Please try changing the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)' to 'Encrypted password'.
发件服务器（SMTP） %S 不允许明文密码。请尝试将“账号设置 | 发件服务器（SMTP）”中的“验证方式”更改为“加密的密码”。