Hutool邮箱工具包问题：535 Error authentication failed

详细报错信息：

Exception in thread “main” cn.hutool.extra.mail.MailException: AuthenticationFailedException: 535 Error: authentication failed

at cn.hutool.extra.mail.Mail.send(Mail.java:358)

at cn.hutool.extra.mail.MailUtil.send(MailUtil.java:395)

at cn.hutool.extra.mail.MailUtil.send(MailUtil.java:140)

at cn.hutool.extra.mail.MailUtil.send(MailUtil.java:123)

at cn.hutool.extra.mail.MailUtil.send(MailUtil.java:64)

at com.provy.jiagou.mail.MailHandler.main(MailHandler.java:12)

Caused by: javax.mail.AuthenticationFailedException: 535 Error: authentication failed

at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:826)

at com.sun.mail.smtp.SMTPTransport.authenticate(SMTPTransport.java:761)

at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:685)

at javax.mail.Service.connect(Service.java:317)

at javax.mail.Service.connect(Service.java:176)

at javax.mail.Service.connect(Service.java:125)

at javax.mail.Transport.send0(Transport.java:194)

at javax.mail.Transport.send(Transport.java:124)

at cn.hutool.extra.mail.Mail.doSend(Mail.java:372)

at cn.hutool.extra.mail.Mail.send(Mail.java:356)

… 5 more

问题原因：

在使用hutool时，配置文件中user字段是可以忽略的（针对部分邮箱），但在使用163邮箱时，user为必填，且要和@163.com前缀保持一致。

解决办法：

完整配置如下：

from = aaa@163.com

user = aaa

pass = CNDRRVBLLYSMOKVW

sslEnable = true