extern int sending_port; /* Port of outgoing interface */
extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
+extern int slow_lookup_log; /* Log DNS lookups taking loger than N millisecs */
extern int smtp_accept_count; /* Count of connections */
extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
extern int smtp_accept_max; /* Max SMTP connections */