how to skip bad header checks for mail lists?

[Andy Howell]

Several mailing lists I subscribe to fail the bad header checks. The 
mail is otherwise valid.

I tried adding

@bypass_header_checks_maps = (  ['libvir-list at redhat.com' ],
                                 ['discuss-gnuradio at gnu.org' ] );

How do I skip the bad header checks based on the message being on the list?

For example, this message gets flagged because of multiple "References" 
headers:

From: Michal Privoznik <mprivozn at redhat.com>
To: libvir-list at redhat.com
Date: Wed,  4 May 2016 14:33:57 +0200
Message-Id: 
<eba6485c72c282bce9dde2b90d283c39ea3bfbe7.1462365035.git.mprivozn at redhat.com>
In-Reply-To: <cover.1462365035.git.mprivozn at redhat.com>
References: <cover.1462365035.git.mprivozn at redhat.com>
In-Reply-To: <cover.1462365035.git.mprivozn at redhat.com>
References: <cover.1462365035.git.mprivozn at redhat.com>
X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27
X-loop: libvir-list at redhat.com
Subject: [libvirt] [PATCH 3/4] qemu_monitor_json: Follow refactor
X-BeenThere: libvir-list at redhat.com
X-Mailman-Version: 2.1.12
Precedence: junk
List-Id: Development discussions about the libvirt library & tools
	<libvir-list.redhat.com>
List-Unsubscribe: <https://www.redhat.com/mailman/options/libvir-list>,
	<mailto:libvir-list-request at redhat.com?subject=unsubscribe>
List-Archive: <https://www.redhat.com/archives/libvir-list>
List-Post: <mailto:libvir-list at redhat.com>
List-Help: <mailto:libvir-list-request at redhat.com?subject=help>
List-Subscribe: <https://www.redhat.com/mailman/listinfo/libvir-list>,
	<mailto:libvir-list-request at redhat.com?subject=subscribe>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Sender: libvir-list-bounces at redhat.com
Errors-To: libvir-list-bounces at redhat.com

Thanks,

Andy