extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
extern void smtp_proxy_tls(uschar *, size_t, int *, int);
extern BOOL smtp_read_response(smtp_inblock *, uschar *, int, int, int);
extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
extern void smtp_proxy_tls(uschar *, size_t, int *, int);
extern BOOL smtp_read_response(smtp_inblock *, uschar *, int, int, int);