SMTP MTA Strict Transport Security (MTA-STS) is a mechanism enabling mail service providers (SPs) to declare their ability to receive Transport Layer Security (TLS) secure SMTP connections and to specify whether sending SMTP servers should refuse to deliver to MX hosts that do not offer TLS with a trusted server certificate.| IETF Datatracker
DNSSEC does not protect delegation information, it contains NS RRSet on the parent side and glue records. This document defines delegation information signer (DiS) resource record for protecting the delegation information, by inserting on the parent side of zone cut to hold a hash of delegation information. The DiS resource record reuses the type code and wire format of DS resource record, and distinguishes it from existing DS RRSet by using a new digest type. This document also describes the...| IETF Datatracker
This document recommends improved DNS [RFC1034] [RFC1035] resolver behavior with respect to the processing of Name Server (NS) resource record sets (RRset) during iterative resolution. When following a referral response from an authoritative server to a child zone, DNS resolvers should explicitly query the authoritative NS RRset at the apex of the child zone and cache this in preference to the NS RRset on the parent side of the zone cut. Resolvers should also periodically revalidate the child...| IETF Datatracker
This document specifies the behavior that is expected from the Domain Name System with regard to DNS queries for names ending with '.home.arpa.' and designates this domain as a special-use domain name. 'home.arpa.' is designated for non-unique use in residential home networks. The Home Networking Control Protocol (HNCP) is updated to use the 'home.arpa.' domain instead of '.home'.| IETF Datatracker