Re: [idn] IDNs in email message bodies

["Eric A. Hall" <ehall@ehsco.com>]

William Tan wrote:

> I envisage the following sending process:
> 
> 1. User compose a message to an IDN email address.
> 2. MUA converts the IDN email address to ACE
> 3. MUA uses the ACE for RFC821 MAIL and RCPT commands
> 4. MUA uses the ACE in RFC822 From: and To: headers (as recommended
> in idn-mua I-D)
> 5. MUA leaves the message body untouched.

What about Received, Message-ID, Path, and all of the other message
headers which store IDNs? HTTP proxies and a bunch of other apps are going
to have similar problems.

Some sort of policy probably needs to be defined somewhere.

Should we be answering these questions or should the question be raised in
a document and left for the respective WGs to answer?

-- 
Eric A. Hall                                        http://www.ehsco.com/
Internet Core Protocols          http://www.oreilly.com/catalog/coreprot/