javax.mail.AuthenticationFailedException: 530 Error: A secure connection is requiered(such as ssl) Properties prop = new Properties(); prop.setProperty("mail.transport.protocol", "smtp"); // 設置郵件發(fā)送協(xié)議 prop.setProperty("mail.host", "smtp.qq.com"); // 郵件服務器地址 //prop.setProperty("mail.smtps.ssl.enable", "true"); // 郵件ssl驗證 prop.setProperty("mail.smtp.auth", "true"); // 郵件服務身份驗證 //prop.setProperty("mail.smtp.localhost", "127.0.0.1"); Session session = Session.getDefaultInstance(prop); // 收件人電子郵箱 String to = "xxxxx@qq.com"; // 發(fā)件人電子郵箱 String from = "xxxx@qq.com"; try{ // 創(chuàng)建默認的 MimeMessage 對象 MimeMessage message = new MimeMessage(session); // Set From: 頭部頭字段 message.setFrom(new InternetAddress(from)); // Set To: 頭部頭字段 message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: 頭部頭字段 message.setSubject("This is the Subject Line!"); // 設置消息體 message.setText("This is actual message"); // 根據(jù) Session 獲取郵件傳輸對象 Transport transport = session.getTransport(); transport.connect("xxx@qq.com","xxxxx"); // 發(fā)送消息 transport.send(message); System.out.println("Sent message successfully...."); }catch (MessagingException mex) { mex.printStackTrace(); }