使用JavaMail发送电子邮件

Question

我尝试使用JavaMail发送电子邮件，但收到异常消息，我不知道发生了什么！

public class Mail 
{
private int port = 587;
private String host = "smtp.live.com";
private String from = "myusername@live.com";
private boolean auth = true;
private String username = "myusername@live.com";
private String password = "mypassword";
private Protocol protocol = Protocol.SMTPS;
private boolean debug = true;


@SuppressWarnings("incomplete-switch")
public void sendMail(String to, String subject, String body)
{
    Properties outlookProps = new Properties();
    outlookProps.put("mail.smtp.host", host);
    outlookProps.put("mail.smtp.port", port);

    switch (protocol) {
    case SMTPS:
        outlookProps.put("mail.smtp.ssl.enable", true);
        break;
    case TLS:
        outlookProps.put("mail.smtp.starttls.enable", true);
        break;
    }

    Authenticator authenticator = null;
    if (auth) {
        outlookProps.put("mail.smtp.auth", true);
        authenticator = new outlookAuthenticator();
    }

    Session session = Session.getInstance(outlookProps, authenticator);
    session.setDebug(debug);

    MimeMessage message = new MimeMessage(session);
    try {
        message.setFrom(new InternetAddress(from));
        InternetAddress[] toAddresses = {new InternetAddress(to)};
        message.setRecipients(Message.RecipientType.TO, toAddresses);
        message.setSubject(subject);
        message.setSentDate(new Date());
        message.setText(body);
        Transport.send(message);
    } catch (MessagingException ex) {
        ex.printStackTrace();
    }

}

class outlookAuthenticator extends Authenticator
{
        private PasswordAuthentication pa = new PasswordAuthentication(username, password);
        @Override
        public PasswordAuthentication getPasswordAuthentication() {
            return pa;
        }
}

我收到此异常：

    com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.live.com, 587; timeout -1;
  nested exception is:
    java.net.SocketException: Permission denied: connect
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1961)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:654)
    at javax.mail.Service.connect(Service.java:367)
    at javax.mail.Service.connect(Service.java:226)
    at javax.mail.Service.connect(Service.java:175)
    at javax.mail.Transport.send0(Transport.java:253)
    at javax.mail.Transport.send(Transport.java:124)
    at net.Mail.sendMail(Mail.java:54)
    at ahmad_Project.Main.main(Main.java:13)
Caused by: java.net.SocketException: Permission denied: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:297)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:229)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1927)
    ... 8 more

我不知道拒绝权限是什么意思，这可能是由于我的防病毒软件阻止了它或类似原因引起的吗？
请帮助！