@Override
    public String authenticateRequest(final HttpServletRequest request) {
        final String smUser = request.getHeader(SITE_MINDER_HEADER.getValue());
        if (smUser == null || smUser.trim().isEmpty()) {
            // SiteMinder has not authenticated the user
            return null;
        } else {
            return smUser;
        }
    }
Indicates if this ServletRequestAuthenticator is enabled or not

@return {@code true} if enabled, otherwise {@code false}
xmppserver/src/main/java/org/jivesoftware/admin/SiteMinderServletRequestAuthenticator.java