On Mar 6, 2005, at 10:57 AM, Hallam-Baker, Phillip wrote:
Nah, why not just do a hierarchical query?
Base64(SHA1(messageID)).Base64(sha1(userID))._revocation.example.com
Standard DNS config can then be used to revoke the user or the
individual
message:
*.Base64(sha1(userID))._revocation.example.com TXT "status=revoked
reason=spam"
I was thinking the same thing. Though it need not be codified in the
standard. The identifier just needs to conform to DNS label syntax, be
it one label or many. That way Yahoo can use this type of scheme and
smaller mail systems can use simpler schemes.
-andy