+#ifdef EXPERIMENTAL_TPDA
+/*************************************************
+* Post-defer action *
+*************************************************/
+
+/* This expands an arbitrary per-transport string.
+ It might, for example, be used to write to the database log.
+
+Arguments:
+ ob transport options block
+ addr the address item containing error information
+ host the current host
+
+Returns: nothing
+*/
+
+static void
+tpda_deferred(smtp_transport_options_block *ob, address_item *addr, host_item *host)
+{
+uschar *action = ob->tpda_host_defer_action;
+if (!action)
+ return;
+
+tpda_delivery_ip = string_copy(host->address);
+tpda_delivery_port = (host->port == PORT_NONE)? 25 : host->port;
+tpda_delivery_fqdn = string_copy(host->name);
+tpda_delivery_local_part = string_copy(addr->local_part);
+tpda_delivery_domain = string_copy(addr->domain);
+tpda_defer_errno = addr->basic_errno;
+
+tpda_defer_errstr = addr->message
+ ? addr->basic_errno > 0
+ ? string_sprintf("%s: %s", addr->message, strerror(addr->basic_errno))
+ : string_copy(addr->message)
+ : addr->basic_errno > 0
+ ? string_copy(strerror(addr->basic_errno))
+ : NULL;
+
+DEBUG(D_transport)
+ debug_printf(" TPDA(host defer): tpda_host_defer_action=|%s| tpda_delivery_IP=%s\n",
+ action, tpda_delivery_ip);
+
+router_name = addr->router->name;
+transport_name = addr->transport->name;
+if (!expand_string(action) && *expand_string_message)
+ log_write(0, LOG_MAIN|LOG_PANIC, "failed to expand tpda_defer_action in %s: %s\n",
+ transport_name, expand_string_message);
+router_name = transport_name = NULL;
+}
+#endif
+
+
+