异常帮我看看谢谢.小弟是新手没有多少分.谢谢.

Question

方法:JAVAMAIL方面的
public void send (String host,String fromaddress,String recipient_address,String tocontent,String title) throws Exception{
int flag;
Transport transport;
Properties mailpros=new Properties();
         mailpros.put("mail.smtp.host",host);
         mailpros.put("mail.smtp.auth", "true");
         mailpros.put("mail.smtp.user",fromaddress);
         mailpros.put("mail.smtp.password","qq");
         Session mailsession=Session.getInstance(mailpros);
         MimeMessage message=new MimeMessage(mailsession);
         InternetAddress sender=new InternetAddress(fromaddress);
         message.setFrom(sender);
         message.setSubject(title);
         message.setText(tocontent);
         message.setRecipient(Message.RecipientType.TO,new  InternetAddress(recipient_address));
         message.saveChanges();
  
                 Transport.send(message);
         
          System.out.println("?件?送成功");
}
执行这方法后出现的异常是:javax.mail.SendFailedException: Sending failed;
  nested exception is:
class javax.mail.AuthenticationFailedException
at javax.mail.Transport.send0(Transport.java:218)
at javax.mail.Transport.send(Transport.java:80)
at com.Mail.send(Mail.java:56)
at test.test.main(test.java:12)
希望大家给我看看.谢谢.