Envio de e-mail com código JAVA

Email.java

private void sendEmail(String destinatario) {
		final String username = "user@server.com.br";
		final String password = "password";

		Properties props = new Properties();
		props.put("mail.smtp.auth", "true");
//		props.put("mail.smtp.starttls.enable", "true"); use with gmail
		props.put("mail.smtp.host", "mail.csrh.com.br");
		props.put("mail.smtp.port", "587");
		props.put("mail.imap.ssl.checkserveridentity", "false"); // is not necessary with gmail
		props.put("mail.imap.ssl.trust", "*"); // is not necessary with gmail

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

		try {
			Message message = new MimeMessage(session);
			message.setFrom(new InternetAddress("user@server.com.br"));
			message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(destinatario));
			message.setSubject("your subject");
			message.setText("Your message");
			Transport.send(message);

		} catch (MessagingException e) {
			throw new RuntimeException(e);
		}
	}