On Wednesday, June 4, 2014 6:58:43 PM CEST, Viktor Dukhovni wrote:
My impression is that UTF-8 domain names are are an MUA display
format issue.

There was tremedously tedious discussion of the approach you suggest, and of many others. There was even a set of experimental RFCs issued. In the end the experimental RFCs were discarded. here's how RFC 6532 sums up the final message format changes:

  The preceding changes mean that the following constructs now allow
  UTF-8:

  1.  Unstructured text, used in header fields like "Subject:" or
      "Content-description:".

  2.  Any construct that uses atoms, including but not limited to the
      local parts of addresses and Message-IDs.  This includes
      addresses in the "for" clauses of "Received:" header fields.

  3.  Quoted strings.

  4.  Domains.

6531 references 6532, and the MAIL FROM/RCPT TO syntax allows UTF8. 6855 makes corresponding changes to IMAP (no more mUTF7, hurray), 6856 to POP, etc.

Arnt

Reply via email to