* valid, the method will return without throwing an exception. See the
     * last <a href="../../../faq.html">FAQ</a> question.
     * <p>
     * See also the <code>jcifs.smb.client.logonShare</code> property.
     *
     * @param dc the domain controller address
     * @param tc the CIFS context containing credentials
     * @throws CIFSException if an error occurs during authentication