BOOL tcp_in_fastopen = FALSE;
BOOL tcp_in_fastopen_logged = FALSE;
BOOL tcp_nodelay = TRUE;
-BOOL tcp_out_fastopen = FALSE;
+int tcp_out_fastopen = 0;
BOOL tcp_out_fastopen_logged= FALSE;
#ifdef USE_TCP_WRAPPERS
uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;