1、错误信息

553 Mail from must equal authorized user  
com.sun.mail.smtp.SMTPSendFailedException: 553 Mail from must equal authorized user  
    at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:1333)  
    at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:906)  
    at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:535)  
    at com.you.mail.model.SendMessage.sendMessage(SendMessage.java:71)  
    at com.you.mail.model.SendMessage.main(SendMessage.java:89)  
    
Exception in thread "main" com.sun.mail.smtp.SMTPSendFailedException: 553 Mail from must equal authorized user  
    at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:1333)  
    at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:906)  
    at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:535)  
    at com.you.mail.model.SendMessage.sendMessage(SendMessage.java:71)  
    at com.you.mail.model.SendMessage.main(SendMessage.java:89)  

由于邮件发送时，登录用户和发信人必须一致；保证登录人邮箱跟发信人邮箱一致，要么都用163邮箱，要么都用QQ邮箱。