extern BOOL smtp_read_response(smtp_inblock *, uschar *, int, int, int);
extern void smtp_respond(uschar *, int, BOOL, uschar *);
extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
extern BOOL smtp_read_response(smtp_inblock *, uschar *, int, int, int);
extern void smtp_respond(uschar *, int, BOOL, uschar *);
extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);