spring boot email 切换outlook邮箱

项目原先邮件发送采用spring mail ，一直用的是腾讯企业邮箱。最近需要切换outlook，原本以为只需简单改下账户密码及host等配置即可。切换之后发现发送失败，经过一番查找终于发送成功。记录一下问题。

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原先邮件发送配置如下

spring.mail.username=xxxxxxxxx
spring.mail.password=xxxxxxxxx
spring.mail.host=smtp.exspring.mail.qq.com
spring.mail.port=465
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.stattls.required=true
spring.mail.properties.mail.debug=false
spring.mail.properties.mail.smtp.port=587
spring.mail.properties.mail.smtp.socketFactory.port=587
spring.mail.properties.mail.smtp.socketFactory.fallback=false
spring.mail.properties.mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.connectiontimeout=30000
spring.mail.properties.mail.smtp.timeout=30000
spring.mail.properties.mail.smtp.writetimeout=30000

-- 切换后配置

spring.mail.username=xxxxxxxxx
spring.mail.password=xxxxxxxxx
spring.mail.host=smtp.office365.com
spring.mail.port=587
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.stattls.required=true
spring.mail.properties.mail.debug=false
spring.mail.properties.mail.smtp.port=587
spring.mail.properties.mail.smtp.socketFactory.port=587
spring.mail.properties.mail.smtp.socketFactory.fallback=false
spring.mail.properties.mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.connectiontimeout=30000
spring.mail.properties.mail.smtp.timeout=30000
spring.mail.properties.mail.smtp.writetimeout=30000

一运行直接报错

org.springframework.mail.MailSendException: Mail server connection failed; nested exception is javax.mail.MessagingException: Could not connect to SMTP host: smtp.office365.com, port: 587;
  nested exception is:
	javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?. Failed messages: javax.mail.MessagingException: Could not connect to SMTP host: smtp.office365.com, port: 587;
  nested exception is:
	javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
	at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:432)
	at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:345)
	at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:340)

发现是ssl认证有问题移除spring.mail.smtp.socketFactory.class配置后

又有新错误信息

javax.mail.AuthenticationFailedException: 535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Tenant. Visit https://aka.ms/smtp_auth_disabled for more information. [HK2PR06CA0003.apcprd06.prod.outlook.com]

好像又是权限有问题，对outlook邮箱配置不熟，找了一大堆资料终于发现。需要设置SMTP权限

outlook邮箱的权限异常_Monten_Cristo的博客-优快云博客

最终配置，终于可以发出去了。另外权限配置后貌似不会立马生效，需要等上一段时间

spring.mail.username=xxxxxxxxx
spring.mail.password=xxxxxxxxx
spring.mail.host=smtp.office365.com
spring.mail.port=587
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.stattls.required=true
spring.mail.properties.mail.debug=false
spring.mail.properties.mail.smtp.port=587
spring.mail.properties.mail.smtp.socketFactory.port=587
spring.mail.properties.mail.smtp.socketFactory.fallback=false
#spring.mail.properties.mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.smtp.connectiontimeout=30000
spring.mail.properties.mail.smtp.timeout=30000
spring.mail.properties.mail.smtp.writetimeout=30000