extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
extern int sending_port; /* Port of outgoing interface */
extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
+extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
extern int smtp_accept_count; /* Count of connections */
extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
-extern int tcp_out_fastopen; /* 0: no 1: conn used 2: useful */
+extern tfo_state_t tcp_out_fastopen; /* 0: no 1: conn used 2: useful */
#ifdef USE_TCP_WRAPPERS
extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
#endif