java mail 运行demo 提示错误

Question

源代码：public class SendEmail {

public static void main(String[] args) {
// 收件人电子邮箱
String to = "[e-mail]";

// 发件人电子邮箱
String from = "[e-mail]";

// 指定发送邮件的主机为 localhost
String host = "hikml.xxxx.com.cn";

// 获取系统属性
Properties properties = System.getProperties();

// 设置邮件服务器
properties.put("mail.smtp.host", host);
properties.put("mail.smtp.port", "25");
properties.setProperty("mail.transport.protocol", "smtp");
properties.put("mail.smtp.auth", "true");
properties.put("mail.smtp.user", "[e-mail]");
properties.put("mail.smtp.password", "*******");

// 获取默认session对象
Session session = Session.getDefaultInstance(properties);
session.setDebug(true);
try {
// 创建默认的 MimeMessage 对象
MimeMessage message = new MimeMessage(session);
// Set From: 头部头字段
message.setFrom(new InternetAddress(from));

// Set To: 头部头字段
message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

// Set Subject: 头部头字段
message.setSubject("This is the Subject Line!");

// 设置消息体
message.setText("This is actual message");

// 发送消息
Transport.send(message);
System.out.println("Sent message successfully....");
} catch (MessagingException mex) {
mex.printStackTrace();
}
}

}

就是网上的一个初级教程，但是一直调不通。hikml.xxxx.com.cn这是公司内部邮件服务器。能平通，使用25端口能telnet连通。
错误：
javax.mail.AuthenticationFailedException: failed to connect, no password specified?
at javax.mail.Service.connect(Service.java:329)
at javax.mail.Service.connect(Service.java:176)
at javax.mail.Service.connect(Service.java:125)
at javax.mail.Transport.send0(Transport.java:194)
at javax.mail.Transport.send(Transport.java:124)
at com.support.mail.SendEmail.main(SendEmail.java:70)

Answer 1

问你的邮件服务器的管理员用的何种加密方式，用户名密码是否正确。