Re: Number of occurrences of headers

Russ Allbery <[email protected]> Wed, 23 Dec 2009 11:13:39 -0800
Newsgroups gmane.ietf.usenet.format
Organization The Eyrie
Message-ID <[email protected]>
Julien =C3=89LIE <[email protected]> writes:

> I am currently adding support for the new header fields defined in RFC 55=
36
> and 5537 in INN.

> As far as I understand, every field defined in these RFCs can be used 0
> or 1 time in an article, except for Comments: and Original-Sender:
> which can be used an unlimited number of times.

I haven't checked RFC 5322 for the headers defined there, but that sounds
right.

> Regarding Original-Sender:, isn't one time enough?

Normally, yes, but it wouldn't be in pathological gatewaying situations
where an article was gatewayed multiple times.

--=20
Russ Allbery ([email protected])             <http://www.eyrie.org/~eagle/>