uschar *clmacros[MAX_CLMACROS];
BOOL config_changed = FALSE;
FILE *config_file = NULL;
-uschar *config_filename = NULL;
+const uschar *config_filename = NULL;
int config_lineno = 0;
#ifdef CONFIGURE_GROUP
gid_t config_gid = CONFIGURE_GROUP;
int errors_sender_rc = EXIT_FAILURE;
#ifndef DISABLE_EVENT
uschar *event_action = NULL; /* expansion for delivery events */
-uschar *event_data = NULL; /* auxilary data variable for event */
+uschar *event_data = NULL; /* auxiliary data variable for event */
int event_defer_errno = 0;
const uschar *event_name = NULL; /* event name variable */
#endif