No, but that would be a really lousy way to implement searching for
non-ASCII text in message headers. If I were implementing such
The reference to searching nicely underscores that this entire thread
pertains to local implementation issues, rather than having anything at all
to do with the DNS.
The DNS does not have searching.
And with respect to the comparison with MIME, IDNA lays a specialized
character format onto an existing string environment, thereby requiring
change only for participants that which to enjoy the new feature. It
requires no change to the infrastructure and has no impact on
non-participating DNS entities. That is the architectural basis for
comparing IDNA to MIME.
In other words, folks, this entire thread is caused by misunderstandings of
the difference between protocol and implementation.
Dave Crocker <mailto:dave(_at_)tribalwise(_dot_)com>
TribalWise, Inc. <http://www.tribalwise.com>
tel +1.408.246.8253; fax +1.408.850.1850