ietf-822
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Re: Multiple message-ids.

2008-03-01 22:06:25

Dave Crocker wrote:
 
the document asserts that more than one sometimes appear
in a message.

That is a bug.  There should be precisely one Message-ID per
message, set by the UA or MSA / news / list server.  When a
message without Message-ID hits a mail2news gateway, and the
gateway is not sure that there are no other gateways into
the same newsgroup(s), the broken message has to be dropped.  

And a message with more than one Message-ID also has to be 
dropped.  In that case an error report to the broken MSA
could help, IIRC MSAs are supposed to enforce 2822 syntax.

 Frank

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