ietf-822
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Re: Message-IDs - Another Fine Mess

2002-03-14 09:56:33

Hi,

--On Tuesday, March 12, 2002 10:10 AM +0000 Charles Lindsey
<chl(_at_)clw(_dot_)cs(_dot_)man(_dot_)ac(_dot_)uk> wrote:

| 
| 
| In <01KF8JCEOCBS0045PS(_at_)mauve(_dot_)mrochek(_dot_)com> 
ned+ietf-822(_at_)mrochek(_dot_)com writes:
| 
| I am still sending this to both lists, with Reply-To to both.
| 
|>> 3. Now I have just found another feature/bug.
| 
|> I can't speak to news, but this is an issue that email software has had
|> to deal with for almost two decades now.
| 
|>> Consider the following three msg-ids, all syntactically correct in RFC
|>> 2822:
| 
|>> A.   <Joe_Doe(_at_)[127(_dot_)0(_dot_)0(_dot_)1]>
|>> B.   <"Joe_Doe"@[127.0.0.1]>
|>> C.   <"Joe\_Doe"@[127\.0\.0\.1]>
| 
|>> Question. Are those three semantically the same in RFC 2822?
| 
|> Yes they are.
| 
| So are you saying, for example, that mail readers which do threading based
| on the References line are programmed to take this into account? Seems a
| lot of unnecessary work to me.
| 
| OK, here is an experiment. The Message-ID of your mail was
| <01KF8JCEOCBS0045PS(_at_)mauve(_dot_)mrochek(_dot_)com>. I have made the 
References line in
| this message to be <"01KF8JCE\OCBS0045PS"@mauve.mrochek.com>.
| 
| Hands up anybody with a threading mail reader that threaded my reply as a
| followup to yours (and hands down if it didn't).
| 

Testing this with IMAP servers that implement the IMAP THREAD extension:
one worked, the other did not. I'll send in a report on that. I suspect
there also ought to be an explicit comment in that specification warning
about this issue.

-- 
Cyrus Daboo