As of today I count 171460 domains with correct DANE TLSA records for SMTP.
Je note qu'environ 1500 domaines supplémentaires activent DANE TLSA chaque mois. Il y a eu une forte croissance les premiers mois de 2017. En janvier 2017, il y avait 106082 domaines qui publiaient des enregistrements DANE TLSA.
As expected the bulk of the DANE domains are hosted the handful of DNS/hosting providers who've enabled DANE support in bulk for the domains they host. […] There are 2615 unique zones in which the underlying MX hosts are found, this counts each of the above providers as just one zone, so is a measure of the breadth of adoption in terms of servers deployed. Alternatively, a similar number is seen in the count (2707) of distinct MX host server certificates that support the same ~171000 domains.
The real numbers are surely larger, because I don't have access to the full zone data for most ccTLDs, especially .no/.nl/.de.
Pour utiliser DANE TLSA sur vos domaines, voir : rappels et mise en œuvre de DANE TLSA.