public SMTPEmailTransport (String smtpHost)
public SMTPEmailTransport()
    public SMTPEmailTransport (String smtpHost)        throws EmailException    {        this.smtpHost = smtpHost;        try        {            Properties props = new Properties();            props.put ("mail.smtp.host", smtpHost);            props.put ("mail.smtp.allow8bitmime", "true");            session = Session.getDefaultInstance (props, null);            transport = session.getTransport ("smtp");        }        catch (MessagingException ex)        {            throw new EmailException ("Unable to initialize transport to "                                    + "SMTP host \""                                    + smtpHost                                    + "\"",                                      ex);        }    }