extern gstring *arc_sign(const uschar *, gstring *, uschar **);
extern void arc_sign_init(void);
extern const uschar *acl_verify_arc(void);
+extern uschar * fn_arc_domains(void);
#endif
extern void assert_no_variables(void *, int, const char *, int);
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 *);