private static void LogonRequestCallback(Client pClient, Header pHeader, LogonRequest pLogonRequest)
        {
            Account account = AccountCache.RetrieveAccountByEmail(pLogonRequest.Email);

            if (account == null)
            {
                pClient.PermittedServices.Clear();
                pClient.ImportedServices.Clear();
                pClient.SendAuthenticationClientLogonComplete(new LogonResult(EErrorCode.LoginInformationWasIncorrect));
                return;
            }
        }