Mail from multiple lists...

[Norman Walsh <ndw@nwalsh.com>]

I find that I'm on several (private) lists that don't appear to
advertise themselves in any obvious way. Typically the headers look
like this:

X-From-Line: some.user@example.com Mon Nov 06 16:09:06 2000
Received: from eastmail1.example.com (eastmail1 [129.148.1.240])
	by purol.example.com (8.9.3+Sun/8.9.3/ENSMAIL,v1.7) with ESMTP id QAA27322;
	Mon, 6 Nov 2000 16:02:28 -0500 (EST)
Received: from mail1.example.com (mail1 [129.145.1.2])
	by eastmail1.example.com (8.9.3+Sun/8.9.3/ENSMAIL,v1.7) with ESMTP id QAA27823;
	Mon, 6 Nov 2000 16:02:26 -0500 (EST)
Received: from eastmail1.example.com (eastmail1.example.com [129.148.1.240])
	by mail1.example.com (8.9.1b+Sun/8.9.1/ENSMAIL,v1.6.1-mail1) with ESMTP id NAA19369
	for <list1@example.com>; Mon, 6 Nov 2000 13:02:24 -0800 (PST)
Received: from volcano.example.com (volcano.example.com [129.148.173.163])
	by eastmail1.example.com (8.9.3+Sun/8.9.3/ENSMAIL,v1.7) with ESMTP id QAA27792;
	Mon, 6 Nov 2000 16:02:23 -0500 (EST)
Received: from east.example.com (hobo17.Japan.example.com [129.158.86.117])
	by volcano.example.com (8.8.8+Sun/8.8.8) with ESMTP id QAA20065;
	Mon, 6 Nov 2000 16:02:18 -0500 (EST)
Message-ID: <3A071CB3.201B2E98@example.com>
Date: Mon, 06 Nov 2000 16:03:47 -0500
From: Some User <some.user@example.com>
X-Mailer: Mozilla 4.76 [en] (Win98; U)
X-Accept-Language: en
MIME-Version: 1.0
To: Some User2 <some.user2@machine.example.com>
CC: list1@example.com, list2@example.com
Subject: Some subject
References: <5.0.0.25.2.20001106124924.009ffeb0@abnaki.east.example.com> <3A06F3B9.99CFE5B1@canada.example.com>
Content-Type: multipart/mixed;
 boundary="------------D523D08001C85D923B502044"
X-Content-Length: 1685
Lines: 53

Unfortunately, my 

(setq nnmail-split-fancy
   ...
	     (any "list1@.*example\.com" "example.list1")
	     (any "list2@.*example\.com" "example.list2")
   ...)

puts two copies of this message in nnml:example.list1 instead of
putting one copy in example.list1 and another in example.list2.

Is there some obvious technique that I'm overlooking?

On close inspection, I do see that one of the received headers offers
a clue:

  Received: from eastmail1.example.com (eastmail1.example.com [129.148.1.240])
  	by mail1.example.com (8.9.1b+Sun/8.9.1/ENSMAIL,v1.6.1-mail1) with ESMTP id NAA19369
	for <list1@example.com>; Mon, 6 Nov 2000 13:02:24 -0800 (PST)

I suppose I could filter on that, though I feel a little uncomfortable
filtering on received: headers. Is my discomfort unfounded?

                                        Be seeing you,
                                          norm

-- 
Norman Walsh <ndw@nwalsh.com> | Criticism talks a good deal of
http://nwalsh.com/            | nonsense, but even its nonsense is a
                              | useful force. It keeps the question of
                              | art before the world, insists upon its
                              | importance, and makes it always in
                              | order.--Henry James