springboot发送邮件遇到的问题

在实际项目中遇到的需求：使用企业内部邮箱，比如我自己的邮箱cczhao@xxx，发送邮件给企业内其它同事。我先是使用QQ邮箱、163邮箱发送邮件给企业内其他同事，结果都没有问题，下面给出配置详情：

##163邮箱设置###
spring.mail.host=smtp.163.com
spring.mail.username=xxx@163.com
spring.mail.port=465
spring.mail.properties.mail.smtp.socketFactory.port = 465
spring.mail.properties.mail.smtp.socketFactory.class = javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.socketFactory.fallback = false
spring.mail.password=xxx(自己的邮箱密码)
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

##QQ邮箱设置###
spring.mail.host=smtp.qq.com
spring.mail.username=xxx@qq.com
spring.mail.port=465
spring.mail.properties.mail.smtp.socketFactory.port = 465
spring.mail.properties.mail.smtp.socketFactory.class = javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.socketFactory.fallback = false
spring.mail.password=orwzrgddefbdbaea(这里是授权码，不是QQ邮箱密码)
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

然后，我使用企业内的邮箱作为邮件发送服务器，配置同上，如下所示

###企业邮箱设置###
spring.mail.host=xxx
spring.mail.username=cczhao@xxx
spring.mail.port=465
spring.mail.properties.mail.smtp.socketFactory.port = 465
spring.mail.properties.mail.smtp.socketFactory.class = javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.socketFactory.fallback = false
spring.mail.password=xxx
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

在代码实际执行过程中遇到了下面的问题：(PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target.)

error

经查询，原因应该是没有通过邮件服务器认证造成的，还需要在配置文件中加上spring.mail.properties.mail.smtp.ssl.trust的配置，附上完整的配置信息：

###企业邮箱设置###
spring.mail.host=xxx
spring.mail.username=cczhao@xxx
spring.mail.port=465
spring.mail.properties.mail.smtp.socketFactory.port = 465
spring.mail.properties.mail.smtp.socketFactory.class = javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.socketFactory.fallback = false
spring.mail.password=xxxxx
spring.mail.properties.mail.smtp.ssl.trust=xxx
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

OVER!!!