We run a news server for our engineering teams, which is also linked to the code repositories (so that all engineers can subscribe to any changes in the repos or just the projects they are interested in). On quite a regular basis (several times a day) I (as the sysadmin for that server) receive bounces from innd with the above as the first line. The news server simply rejects these messages and the articles don't get posted. Here is an example:

inews failed: inews: cannot send article to server: 441 437 No colon-space in "X-MS-TNEF-Correlator:" header inews: article not posted


-------- Article Contents

Path: aminocom.com!ctaylor
From: [email protected] (Cameron Taylor)
Newsgroups: amino.qa.reports
Content-Language: en-US
Content-Type: multipart/alternative;
 boundary="_000_A2AB95742ADD524795C13EDE8F8CCD201A798C0Eukswaex01_"
MIME-Version: 1.0
Subject: [QA REPORT] MDK 400 release 3.4.33 **PRE-RELEASE**
Message-ID: 
Date: Thu, 9 Sep 2010 16:15:16 +0000
X-Received: from uk-swa-ex02.aminocom.com (uk-swa-ex02.aminocom.com [10.171.3.10])
 by theoline.aminocom.com (8.14.3/8.13.8) with ESMTP id o89GF8tx019494
 for ; Thu, 9 Sep 2010 17:15:08 +0100
X-Received: from uk-swa-ex01.aminocom.com ([10.171.3.9]) by uk-swa-ex02
 ([10.171.3.10]) with mapi; Thu, 9 Sep 2010 17:15:18 +0100
X-To: QA Reports 
X-Thread-Topic: [QA REPORT] MDK 400 release 3.4.33 **PRE-RELEASE**
X-Thread-Index: ActQOjBdms0CSJsORNSxRIMSZ4H3Ow==
X-Accept-Language: en-US, en-GB
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
X-Auto-Response-Suppress: DR, OOF, AutoReply

--_000_A2AB95742ADD524795C13EDE8F8CCD201A798C0Eukswaex01_
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

SQA Test Report

[QA REPORT] MDK 400 release 3.4.33 **PRE-RELEASE**


Status

.... (rest of the message is not important)

And yes, quite clearly this header doesn't have anything after the colon. The man page for innd doesn't specify why it rejects these messages, it just says it rejects them.

So far I have found out these headers are linked to messages in RTF format (coming from Outlook clients), where normally the formatting information would be stored in a winmail.dat attachment. The clients all use MS Exchange 2010 servers to send their mail (identified above as uk-swa-ex02.aminocom.com) which forwards the message to the news server.

Does anybody know what advice I need to give these users to avoid their articles getting bounced? Or can I change the behaviour of innd? Or do I need to filter these headers out before innd processes the articles?