Got bad greeting from SMTP host smtp.163.com, port 587, response [EOF]

异常信息：Got bad greeting from SMTP host: smtp.163.com, port: 587, response: [EOF]

使用spring-boot-starter-mail

配置:

解决办法1：去掉port

解决办法2：添加socketFactory.class

发送邮件例子代码: