Re: How to send NNTP "cancel" message?

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On Thu, 27 Aug 2009 15:59:57 -0700, Mr Smith wrote:

"Shenan Stanley" <newshelpers@xxxxxxxxx> wrote:

From time to time I delete messages which are considered
to be abusive, or plain rude to other users.

How do you accomplish that?

The poster you responded to used Google Groups to post; I delete all GG
posts in this group (from the client, not the server!) so I couldn't see his
post. However, GG has a facility to cancel posts appearing in GG. I've done
it, even when I've posted with an email address in the, '.invalid' domain.
If you don't have a viable email address as the "Poster", you have to take
some extra steps describing your posting ID, and swear an affidavit that you
have the right to authorize removal of the post. When GG approves, the post
goes, "poof". At least from the Google Groups.

RFC 1036 says that the server should at least ensure that the "cancel"
message has the same sender id as the message being canceled. Are you
saying that you forge the sender id?

Easy to do in OE :-(. That -- the easy of forging sender ids -- is why
honoring "cancel" messages is deprecated.

In any case, Bruce says the MSnews server does not honor "cancel" messages.
Are you saying he is wrong?

Bruce is correct. I've test this a few times myself. Post an article to
'msnews.microsoft.com', and you can't cancel it.

However, post an article to 'news.eternal-september.org', and that server
will honor the cancel. If it disappears from Eternal Septmeber before
Microsoft slurps it, 'msnews.microsof.com' will never see it. OTOH, if
Microsoft does slurp it before Eternal September cancels it, the article
will be gone from 'news.eternal-september.org', and Google Groups (and any
other NNTP server which honors cancels), but it will remain on
'msnews.microsoft.com', and any other NNTP server which has it, and does not
honor cancels.

Consequently, the issuing of a cancel control article is very dicey, and
should not be counted on to work across the global spectrum of NNTP servers.

I guess I'll have to try it, after all. Twayne, too, did say that "cancel"
works. But Twayne also said that it might "almost eternity" for the
"cancel" to take effect :-(.

Twayne's results are sufficiently spotty that he has developed a convoluted
theory to explain them. Occam's Razor should prefer my explanation over
Twayne's.

--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum
.

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