system admin e-mail address  这里设置要和发件人邮箱保持一致。

1.如果不保持一致报错如下图所示：

failed to send out e-mailcom.sun.mail.smtp.smtpsendfailedexception: 553 mail from must equal authorized user;  nested exception is:    com.sun.mail.smtp.smtpsenderfailedexception: 553 mail from must equal authorized user

2.邮件保持一致的配置如下图所示：