queue_run_in_order
+# ----- ACL -----
+
+begin acl
+
+delay:
+ accept
+ delay = 3s
+ message = y
+
# ----- Routers -----
begin routers
lookuphost:
driver = dnslookup
+ local_parts = !userd
+ transport = smtp
+ no_more
+
+delay:
+ driver = dnslookup
+ condition = ${acl {delay}}
transport = smtp
no_more