+PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
+ the use of a port name that isn't defined in /etc/services) occurred, the
+ message was deferred as in a normal delivery, and thus remained on the
+ spool, instead of being failed because of the mua_wrapper setting. This
+ is now fixed, and I tidied up some of the mua_wrapper messages at the
+ same time.
+