springboot邮件在阿里服务器发不出去

阿里云服务器禁用了25端口，所以改为465端口采用SSL协议传输邮件

https://blog.csdn.net/u012424783/article/details/79429621

https://blog.csdn.net/qq_40693828/article/details/80629820

mail:
    host: smtp.163.com
    username: *****@163.com
    password: ****
    port: 465
    auth: true
    protocol: smtp
    properties:
      mail.smtp.socketFactory.fallback: false
      mail.smtp.socketFactory.port: 465
      mail.smtp.socketFactory.class: javax.net.ssl.SSLSocketFactory