SpringBoot项目本地可以发送邮件，部署到阿里云服务器发送邮件失败的解决方法

在application.yml文件中配置

 #邮件设置
spring:
  mail:
    host: smtp.exmail.qq.com
    port: 465
    username: [email protected]
    password: xxx
    default-encoding: UTF-8
    #配置阿里云服务器发送邮件
    properties:
      mail:
        smtp:
          ssl:
            trust: smtp.exmail.qq.com
          socketFactory:
            class: javax.net.ssl.SSLSocketFactory
            port: 465
          auth: true
          starttls:
            enable: true
            required: true

　或在application.properties中配置

#邮件配置
spring.mail.host=smtp.exmail.qq.com
spring.mail.port=465
[email protected]
spring.mail.password=xxx
spring.mail.default-encoding=UTF-8
#配置阿里云服务器发送邮件
spring.mail.properties.mail.smtp.ssl.trust=smtp.exmail.qq.com
spring.mail.properties.mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.socketFactory.port=465
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true