javaweb 发送邮件 异常解决、 --在线等
抛出异常：
javax.mail.SendFailedException: Invalid Addresses;
  nested exception is:
com.sun.mail.smtp.SMTPAddressFailedException: 550 Mailbox not found

at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1873)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1120)
at javax.mail.Transport.send0(Transport.java:195)
at javax.mail.Transport.send(Transport.java:124)
at org.nfxy.servlet.SendMail.main(SendMail.java:47)
Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 550 Mailbox not found

at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1724)
... 4 more
代码：
public class SendMail extends HttpServlet {
 /**
* 
*/

private static MailAuthenticator autherticator=null;
 public static void main(String[] args) {
  for (int i=0;i<5;i++){
   
  String from="546206899@qq.com";
  String to="2856493102@qq.com";
  String smtpServer="smtp.qq.com";
  String subject="Hello ,this is a email Test!!";
  String content ="Welcome to you!!";
  Properties props = System.getProperties();
   
  props.put("mail.smtp.host", smtpServer);
  props.put("mail.smtp.auth","true");
  autherticator = new MailAuthenticator("546206899@qq.com","xxxxxxxxx");
  Session session = Session.getDefaultInstance(props,autherticator);
  MimeMessage msg = new MimeMessage(session);
  try{
  msg.setFrom(new InternetAddress(from));
  msg.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(to));
  msg.setSubject(subject);
  msg.setSentDate(new Date());
  msg.setText(content);
  Transport.send(msg);
  System.out.println("成功发送邮件......");
  }catch(Exception se){
  se.printStackTrace();
  }
  }
}
}
  //现在的大部分的邮件服务器都要求有身份验证，所以需要此类实现验证功能
  class MailAuthenticator extends Authenticator{
   
  private String username = null;
  private String userpasswd = null;
   
  public MailAuthenticator(){}
  public MailAuthenticator(String username,String userpasswd){
  this.username = username;
  this.userpasswd = userpasswd;
  }
   
  public void setUserName(String username){
  this.username = username;
  }
   
  public void setPassword(String password){
  this.userpasswd = password;
  }
   
  public PasswordAuthentication getPasswordAuthentication(){
  return new PasswordAuthentication(username,userpasswd);
  }
  }

------解决方案--------------------
qq邮箱中，smtp等服务是否启用。
------解决方案--------------------
你的代码没有问题,可以正常发送邮件
可能是你QQ邮件的设置问题吧,请尝试换网易或者其他的邮箱试试
------解决方案--------------------
SMTP配置有误！

很多方面，有可能是你用局域网，有可能是加载的JAR包原因，还有就是QQ邮箱内没开启SMTP服务！