Re: Intent to revive "expires" header from draft-ietf-mailext-new-fields-15

It's not at all clear that the Usenet notion of "expires" is right for 
email.  I'd look at X.400's expiry date as a starting point - at least 
it was designed with email in mind.

Keith

> Then grab the equivalent NetNews header field syntax without
> changing a single comma in it (for interoperability):
> 
> <http://tools.ietf.org/html/draft-ietf-usefor-usefor>
> 
> That is an approved RFC waiting for its number.  It is also
> the source for the IANA registration of the Expires: header
> field for NetNews.  (See section 3.2.5 and chapter 6)