extern void host_build_sender_fullhost(void);
extern BOOL host_find_byname(host_item *, const uschar *, int, const uschar **, BOOL);
extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
- uschar *, uschar *, uschar *, const uschar **, BOOL *);
+ uschar *, const dnssec_domains *, const uschar **, BOOL *);
extern ip_address_item *host_find_interfaces(void);
extern BOOL host_is_in_net(const uschar *, const uschar *, int);
extern BOOL host_is_tls_on_connect_port(int);