springboot mail 异常记录（项目）

 

mail:
  host: smtp.aliyun.com
  username: 
  password: 
  port: 25
  protocol: smtp
  default-encoding: UTF-8

以上本地Windows环境测试发送邮件正常，大约在3s能收到邮件

Mail server connection failed; nested exception is com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.aliyun.com, 25; timeout -1;
  nested exception is:
    java.net.ConnectException: Connection timed out (Connection timed out). Failed messages: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.aliyun.com, 25; timeout -1;

以上是部署到Linux服务器上，异常信息

原因：https://help.aliyun.com/knowledge_detail/56130.html

修改配置文件