x@y.z failed to verify: unrouteable mail domain "y.z" x@smart.domain router = smart1, transport = unset x@test.ex router = smart2, transport = dummy x@myhost.test.ex failed to verify: Unrouteable address x@y.z failed to verify: unrouteable mail domain "y.z" x@smart.domain failed to verify: unrouteable mail domain "smart.domain" x@test.ex failed to verify: Unrouteable address x@myhost.test.ex failed to verify: Unrouteable address