Deprecating the DNS ANY meta-query type

The Domain Name System (DNS) continues to evolve with new developments and resource records types being added regularly. One such record type, DNS ANY meta-query, is being deprecated due to its lack of justified uses and the complexity it adds to DNS server code bases. ANY queries are not widely used by real world software, except for unpatched versions of qmaild and Firefox version 36.0 to 36.0.1. The decision to phase out ANY queries is supported by examples from other operators who have limited or disabled them in the past with minimal impact on Internet users.