mail:
   
    password: CUWZVYBVGHAHEYYQ
    port: 465
    properties:
      mail:
        smtp:
          auth: true
          starttls:
            enable: true
            required: true
          socketFactory:
           class: javax.net.ssl.SSLSocketFactory

aws、阿里云等不支持端口25，修改协议为SSL，同时修改端口