extern BOOL queue_only_override; /* Allow override from command line */
extern BOOL queue_only_policy; /* ACL or local_scan wants queue_only */
extern BOOL queue_run_in_order; /* As opposed to random */
-extern int queue_run_max; /* Max queue runners */
+extern uschar *queue_run_max; /* Max queue runners */
extern BOOL queue_smtp; /* Disable all immediate STMP (-odqs)*/
extern uschar *queue_smtp_domains; /* Ditto, for these domains */