extern void rf_change_domain(address_item *, const uschar *, BOOL, address_item **);
extern uschar *rf_expand_data(address_item *, uschar *, int *);
extern int rf_get_errors_address(address_item *, router_instance *,
extern void rf_change_domain(address_item *, const uschar *, BOOL, address_item **);
extern uschar *rf_expand_data(address_item *, uschar *, int *);
extern int rf_get_errors_address(address_item *, router_instance *,