無法使用JavaMail，Exchange Server和SMTP

Question

我想下面的代碼使用JavaMail，Exchange Server和SMTP發送郵件發送電子郵件：

  Properties props = new Properties(); 
      props.put("mail.smtp.auth", true); 
      props.put("mail.smtp.starttls.enable", true); 
      props.put("mail.smtp.host", host); 
      props.put("mail.smtp.port", port); 

      Session session = Session.getInstance(props, 
        new javax.mail.Authenticator() { 
       protected PasswordAuthentication getPasswordAuthentication() { 
        return new PasswordAuthentication(username, 
          password); 
       } 
      }); 

      Message message = new MimeMessage(session); 
      message.setFrom(new InternetAddress(from)); 
      message.setRecipients(Message.RecipientType.TO, 
        InternetAddress.parse(to)); 
      message.setRecipients(Message.RecipientType.CC, 
        InternetAddress.parse(cc)); 
      message.setSubject(sub); 

      MimeBodyPart messageBodyPart1 = new MimeBodyPart(); 
      messageBodyPart1.setContent(msg, "text/html; charset=utf-8"); 

      Multipart multipart = new MimeMultipart(); 
      multipart.addBodyPart(messageBodyPart1); 

      message.setContent(multipart); 

      Transport.send(message); 

獲得以下錯誤，請幫忙：

com.sun.mail.smtp.SMTPSendFailedException: 550 5.7.1 Client does not have permissions to send as this sender Exception has been thrown : com.sun.mail.smtp.SMTPSendFailedException: 550 5.7.1 Client does not have permissions to send as this sender

我已經改變了對2014年7月7日的用戶資料，現在越來越以下錯誤：

Exception has been thrown : javax.mail.MessagingException: Connection dropped by server?; nested exception is: java.io.IOException: Connection dropped by server?

Answer 1

什麼JavaMail的AR的版本你在用嗎？協議跟蹤顯示什麼？你確定你正在對服務器進行身份驗證嗎？

如果您使用的是舊版JavaMail，則需要將屬性設置爲字符串，而不是布爾常量。