uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
int check_log_inodes = 100;
-int check_log_space = 10*1024; /* 10K Kbyte == 10MB */
+int_eximarith_t check_log_space = 10*1024; /* 10K Kbyte == 10MB */
int check_spool_inodes = 100;
-int check_spool_space = 10*1024; /* 10K Kbyte == 10MB */
+int_eximarith_t check_spool_space = 10*1024; /* 10K Kbyte == 10MB */
uschar *chunking_advertise_hosts = US"*";
unsigned chunking_datasize = 0;
uschar *sending_ip_address = NULL;
int sending_port = -1;
SIGNAL_BOOL sigalrm_seen = FALSE;
+const uschar *sigalarm_setter = NULL;
uschar **sighup_argv = NULL;
int slow_lookup_log = 0; /* millisecs, zero disables */
int smtp_accept_count = 0;
uid_t system_filter_uid = (uid_t)-1;
blob tcp_fastopen_nodata = { .data = NULL, .len = 0 };
-int tcp_out_fastopen = 0;
+tfo_state_t tcp_out_fastopen = TFO_NOT_USED;
#ifdef USE_TCP_WRAPPERS
uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
#endif