-address match test: subject=U@w.x.y pattern=*@*.x.y
-w.x.y in "*.x.y"? yes (matched "*.x.y")
-U@W.x.y in "*@*.x.y"? yes (matched "*@*.x.y")
+U@W.x.y in "*@*.x.y"?
+ list element: *@*.x.y
+ address match test: subject=U@w.x.y pattern=*@*.x.y
+ w.x.y in "*.x.y"?
+ list element: *.x.y
+ w.x.y in "*.x.y"? yes (matched "*.x.y")
+ U@W.x.y in "*@*.x.y"? yes (matched "*@*.x.y")