Hello,

In the Message; 

  Subject    : [opensuse] Re: mail headers (was: Postfix + Cyrus IMAP + MySQL 
won't work :-()
  Message-ID : <[EMAIL PROTECTED]>
  Date & Time:  Thu, 10 May 2007 14:36:25 +0200

[Joachim] == Joachim Schrod <[EMAIL PROTECTED]> has written:

Me>> Joachim, why do you always change the Message-Id in the In-Reply-To field
Me>> in your reply mail.
Me>> This breaks the thread!

Sorry for unsufficient explanation.

Joachim> Hmm, the thread is signified by the References header, not by the
Joachim> In-Reply-To header. See RFC 2822, section 3.6.4.

I know.

Of cource, my MUA (=Wanderlust) always see References field.
By encountering Thread's break, I changes setteings as follows;

(setq elmo-msgdb-prefer-in-reply-to-for-parent t)

This is to caorrect thread easier.

Joachim> My In-Reply-To header is different because I don't follow the mailing
Joachim> list directly, but use the news gateway at nntp://news.gmane.org/. The
Joachim> posting that I reply to has the changed message header which gets
Joachim> copied to In-Reply-To. The thread's message ids itself are correctly
Joachim> listed in the References header.

Don't you know?
Your MUA changed Message-ID in the Reference field, too!

Like this;

Original Message-ID is [EMAIL PROTECTED]

In your mail;

References:  <[EMAIL PROTECTED]>
[...]
In-Reply-To: <[EMAIL PROTECTED]>

Is this reasonable with respect to RFC?

Joachim> Well, at least Pine, Thunderbird, Seamonkey, GNUS, Emacs VM, handle it
Joachim> as intended.

Surprised! But how?

Do these MUAs see Reference field?
I don't think so.

Regards,

---
  Masaru Nomiya       mail-to: nomiya @ galaxy.dti.ne.jp

          "Bill! You married with Computers.
           Not with Me!"
          "No..., with money."
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