Re: New syntax on message-IDs

"Charles Lindsey" <[email protected]> Fri, 6 Nov 2009 14:38:31 GMT
Newsgroups gmane.ietf.usenet.format
Message-ID <[email protected]>
In <[email protected]> Russ Allbery <[email protected]> writes:

>"Charles Lindsey" <[email protected]> writes:
>> =?Windows-1252?Q?Julien_=C9LIE?= <[email protected]> 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).

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