userx@test.ex cannot be resolved at this time: error in r1 router: no host(s) specified for domain test.ex
userx@test.ex cannot be resolved at this time: lookup failed for all hosts in r1 router: host_find_failed=ignore host_all_ignored=defer
userx@test.ex cannot be resolved at this time: lookup failed for all hosts in r1 router: host_find_failed=ignore host_all_ignored=defer
userx@test.ex
  router = r1, transport = t1
  host 127.0.0.1 [127.0.0.1]
userx@test.ex
  router = r1, transport = t1
  host 127.0.0.1 [127.0.0.1]
  host 127.0.0.2 [127.0.0.2]
userx@test.ex cannot be resolved at this time: lookup failed for all hosts in r1 router: host_find_failed=ignore host_all_ignored=defer
userx@test.ex is undeliverable: Unrouteable address
userx@test.ex is undeliverable: lookup failed for all hosts in r1 router: host_find_failed=ignore host_all_ignored=fail
userx@test.ex
  router = r2, transport = t2
userx@test.ex cannot be resolved at this time: lookup failed for all hosts in r1 router: host_find_failed=ignore host_all_ignored=freeze