DNSSEC provides authenticated denial of existence ( allows a resolver to validate that a certain domain name does not exist ) .
DANE enables an incremental transition to verified , encrypted SMTP without any other external mechanisms , as described by RFC 7672 .
Since DNSSEC provides authenticated denial of existence ( allows a resolver to validate that a certain domain name does not exist ) , DANE enables an incremental transition to verified , encrypted SMTP without any other external mechanisms , as described by RFC 7672 .