+v1@test.ex verified
+v2@test.ex verified
+a3@test.ex failed to verify: bad user
+ <-- v1@test.ex
+userx@test.ex
+ <-- v1@test.ex
+ router = all, transport = local_delivery
+a3@test.ex failed to verify: bad user
+ <-- v2@test.ex
+userx@test.ex [duplicate, would not be delivered]
+ <-- v2@test.ex
+ router = all, transport = local_delivery