extern int smtp_feof(void);
extern int smtp_ferror(void);
extern uschar *smtp_get_connection_info(void);
-extern BOOL smtp_get_interface(uschar *, int, address_item *, BOOL *,
+extern BOOL smtp_get_interface(uschar *, int, address_item *,
uschar **, uschar *);
extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
extern int smtp_getc(void);