- Implemented Public Key Association (PKA) signature verification. This uses special DNS records and notation data to associate a mail address with an OpenPGP key to prove that mail coming from that address is legitimate without the need for a full trust path to the signing key.
調べていないので良くわかりませんが、S/MIMEやPGPとDomainKeyの中間のような感じで運用できるのでしょうか？