extern void sigalrm_handler(int);
extern BOOL smtp_buffered(void);
extern void smtp_closedown(uschar *);
+extern void smtp_command_timeout_exit(void);
+extern void smtp_command_sigterm_exit(void);
+extern void smtp_data_timeout_exit(void);
+extern void smtp_data_sigint_exit(void);
extern uschar *smtp_cmd_hist(void);
extern int smtp_connect(host_item *, int, uschar *, int,
transport_instance *);