From: Charles Lindsey (chl@clw.cs.man.ac.uk)
Date: Thu Jan 18 2001 - 05:33:43 CST
In <ylhf2yhyc3.fsf@windlord.stanford.edu> Russ Allbery <rra@stanford.edu> writes:
>Charles Lindsey <chl@clw.cs.man.ac.uk> writes:
>> I agree that this should be left to the mail people to standardise, if
>> they think fit (and likely with a SHOULD rather than a MUST). But we
>> might mention in a NOTE that MTAs might well refuse to attempt such
>> deliveries. We are certainly gpoing to say that our user agents Ought
>> Not to try.
>This sounds reasonable to me.
Right, here is the text I have now constructed out of the various
suggestions made:
The mailbox in the From-content SHOULD be a valid address, belonging
to the poster(s) of the article, or person or agent on whose behalf
the post is being sent (see the Sender header, 6.2). When, for
political or other reasons, the poster wishes to indicate that the
address is not a valid email address, the From-content SHOULD be an
address which ends in the top level domain of ".invalid" [RFC 2606].
NOTE: Since such addresses ending in ".invalid" are
undeliverable, user agents Ought to warn any user attempting to
reply to them and Ought Not, in any case, to attempt to deliver
to them (since that would be pointless anyway).
Be warned also that some injecting agents that have
authentication information may choose to replace the From-
content based upon the authenticated identity.
My latest text regarding information in the pre-injection region of the
Path is now:
Often this field will be the only entry in the region (known as the
pre-injection region) after the '%', although there may be entries
corresponding to machines traversed between the posting agent and the
injecting agent proper. In particular, injecting agents that receive
articles from many sources MAY include information to establish the
circumstances of the injection such as the identity of the source
machine (especially if the Injector-Info header (6.19) is absent).
Any such inclusion SHOULD NOT conflict with any genuine site
identifier. The '!' delimiter may be used freely within the pre-
injection region, although '/' and '?' are also appropriate if used
correctly.
This presupposes that there will be a SHOULD in 6.19 regarding the
inclusion of the Injector-Info header. Other issues relating to that
header can be discussed when we come to it.
If these two texts are acceptable, then I think we have finished with
Section 5 for now.
-- Charles H. Lindsey ---------At Home, doing my own thing------------------------ Email: chl@clw.cs.man.ac.uk Web: http://www.cs.man.ac.uk/~chl Voice/Fax: +44 161 436 6131 Snail: 5 Clerewood Ave, CHEADLE, SK8 3JU, U.K. PGP: 2C15F1A9 Fingerprint: 73 6D C2 51 93 A0 01 E7 65 E8 64 7E 14 A4 AB A5