- From: Karl Dubost <karl@w3.org>
- Date: Mon, 12 May 2008 16:10:21 +0900
- To: Henri Sivonen <hsivonen@iki.fi>
- Cc: www-archive <www-archive@w3.org>
Hi Henri,
nothing really important, but I was not sure about your assertion in
http://www.w3.org/mid/805A4886-5EC2-437A-B392-AB4BCD309D4D@iki.fi
Le 12 mai 2008 à 15:44, Henri Sivonen a écrit :
> (Aside: Email messages as a whole also have supplementary user-
> entered data that is supposed to be mandatory: Subject. And as we
> all know, software cannot force people to write a subject. However,
> other people can make subject writing more compelling if you know
> that by not writing a subject you are more likely to get your
> message ignored as spam.)
it seems that Subject is optional.
The only mandatory fields are
* From: (or Sender: if From: is not available).
* Date:
See 3.6. Field definitions
http://www.faqs.org/rfcs/rfc2822
The only required header fields are the origination date field and
the originator address field(s). All other header fields are
syntactically optional.
--
Karl Dubost - W3C
http://www.w3.org/QA/
Be Strict To Be Cool
Received on Monday, 12 May 2008 07:10:58 UTC