public static boolean isEmailAddress(String emailAddress) {
		Boolean valid = null;

		try {
			Matcher matcher = _emailPattern.matcher(emailAddress);
			valid = matcher.matches();
		} catch (Exception e) {
			if (_log.isWarnEnabled()) {
				_log.warn(e);
			}
		}

		if (valid == null) {
			return false;
		} else {
			return valid.booleanValue();
		}
	}