MailAccount account = new MailAccount();
account.setHost("smtp.qq.com");
account.setPort(25);
account.setAuth(true);
account.setFrom("micosage@qq.com");
**// 这里一定要和上面的邮箱名称保持一致,不然会报553**
account.setUser("micosage");
//密码(注意不是登录密码,是QQ邮箱 SMTP授权码)
account.setPass("12345**");
MailUtil.send(account,CollUtil.newArrayList("123456@qq.com"), "测试", "邮件来自Hutool测试", false);