Problema JavaMail

try {

		to = "[email removido]";
		from = "[email removido]";

		Properties props = new Properties();
		props.put("mail.smtp.host", "localhost");
		Session session = Session.getInstance(props, null);

		MimeMessage message = new MimeMessage(session);

		message.setFrom(new InternetAddress(from));
		Address toAddress = new InternetAddress(to);
		message.addRecipient(Message.RecipientType.TO, toAddress);

		message.setSubject("teste de envio de e-mails");

		message.setContent("este eh um teste de envio", "text/plain");

		Transport.send(message);
        System.out.print("mensagem enviada");
		
	}
	catch (Exception e) {
		System.out.print(e.getMessage());
	}