Re: New syntax on message-IDs

["Charles Lindsey" <chl@xxxxxxxxxxxxxxxx>]

In <874op8q2v8.fsf@xxxxxxxxxxxxxxxxxxxxx> Russ Allbery <rra@xxxxxxxxxxxx> writes:

>"Charles Lindsey" <chl@xxxxxxxxxxxxxxxx> writes:
>> =?Windows-1252?Q?Julien_=C9LIE?= <julien@xxxxxxxxxxxxxxx> writes:

>>> CHECK <"test"@test>

>> CHECK is not a standard NNTP command BTW.

>RFC 4644 is standards track.

OK, I got that now. It essentially means "I have an article with this
msg-id; would you like me to send it?" But in fact there is no great need
for the server to check the syntax of the msg-id (though there is nothing
wrong or harmful in doing so). The client has no business offering a bad
msg-id in the first place (and wherever it got it from should not have
sent it, right back to who/whatever constructed it in the first place).

If a bad msg-id _does_ enter the system, then it make well propagate
perfectly well. Then again it may not (some servers may not like it; some
servers might munge it; garbage-in -> garbage-out and all that). What the
standards say is that a well-formed msg-id MUST/SHOULD progagate correctly
(modulo the right of any site to reject anything for reasons of local
policy, of course).

-- 
Charles H. Lindsey ---------At Home, doing my own thing------------------------
Tel: +44 161 436 6131            Web: http://www.cs.man.ac.uk/~chl
Email: chl@xxxxxxxxxxxxxxxx      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