[atlas] [Request] System tags for DNS resolution

[Is there a better way to record enhancement requests for Atlas? Atlas has no public issue tracker, if I'm correct?] It would be cool to have system (automatic) tags for DNS resolution because some probes are using broken DNS resolvers. For instance, system-dns-works (modeled on IPv6's system tag) would be fine. Or may be system-dns-resolver-works (longer but more accurate). For instance, probes 16659, 17072, 17620, 17854 use a resolver which yields a REFUSED for any request and probe 19948, 20065 one with systematic SERVFAIL. [Is the maintainer of the probe automatically notified when there is such an issue?]