Re: draft-ietf-usefor-usepro-02

["Charles Lindsey" <chl@xxxxxxxxxxxxxxxx>]

In <41C76894.511B@xxxxxxxxxxxxxxxxx> Frank Ellermann <nobody@xxxxxxxxxxxxxxxxx> writes:

>Charles Lindsey wrote:
> 
>> I don't think there is any reason to forbid "reimport to
>> Usenet" as such (for example, it may come back into Usenet
>> in a different group and with a different message-id).
>.......................^^^

>>> you -> A - B - C -> me
>>>        |   |
>>>        a   b
>>>        |   |
>>>        other

>>> I never see some of your articles in group ABC.test
>[...]
>> you have not explained to me why it never got to server C

>"a" exported ABC.test to B.other in the other net,  Then "b"
>reimported B.other to B.local on server B.  C doesn't get the
>article in ABC.test.  The "and" in your statement (see above)
>is important.

Ah! So it was gatewayed back into a different newsgroup. In that case, a
new message identifier should have been provided somewhere along the line,
probably by b. Our draft does cover this (or something pretty close to it)
by the following text:

   Exceptionally, if there are multiple incoming gateways for a
   particular set of messages, each to a different newsgroup(s), each
   one SHOULD generate a message identifier unique to that gateway. Each
   incoming gateway nonetheless MUST ensure that it does not gate the
   same message twice.

        NOTE: Consider the example of two gateways of a given mailing
        list into the world-wide Usenet newsgroups, both of which
        preserve the email message identifier. Each newsgroup may then
        receive a portion of the messages (different sites seeing
        different portions).  In these cases, where there is no one
        "official" gateway, some other method of generating message
        identifiers has to be used to avoid collisions. It would
        obviously be preferable for there to be only one gateway which
        crossposts, but this may not be possible to coordinate.

-- 
Charles H. Lindsey ---------At Home, doing my own thing------------------------
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