Hi,

I have been using dkim signatures fine all this while. But suddenly my
dkim signatures are breaking for this particular mail 
I have absolutely no idea why. I have turned on diagnostics and I can
see that all headers are perfect. 

Now I am signing minimal headers still the signatures are breaking 
How can I debug this further ? 
This is the mail header attached 

BTW: For other mails the signatures pass dkim check .. only this mail
has the issue 





-----------
                                                                                
                                                                                
                                                                                
            
Delivered-To: [email protected]
Received: by 10.90.93.11 with SMTP id q11cs201343agb;
        Mon, 1 Feb 2010 04:44:27 -0800 (PST)
Received: by 10.141.53.2 with SMTP id f2mr3097549rvk.291.1265028266743;
        Mon, 01 Feb 2010 04:44:26 -0800 (PST)
Return-Path: <[email protected]>
Received: from mx1.netcore.co.in (mx1.netcore.co.in [202.162.229.17])
        by mx.google.com with ESMTP id
25si13874579pxi.37.2010.02.01.04.44.25;
        Mon, 01 Feb 2010 04:44:26 -0800 (PST)
Received-SPF: neutral (google.com: 202.162.229.17 is neither permitted
nor denied by best guess record for domain of
[email protected])
client-ip=202.162.229.17;
Authentication-Results: mx.google.com; spf=neutral (google.com:
202.162.229.17 is neither permitted nor denied by best guess record for
domain of [email protected])
[email protected]; dkim=neutral
(body hash did not verify) [email protected]
Received: from lvs5.netcore.co.in (mmail.netcore.co.in [202.162.248.11])
        by mx1.netcore.co.in (Postfix) with ESMTP id EAEA01DE23C
        for <[email protected]>; Mon,  1 Feb 2010 18:14:22 +0530 (IST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intoday.in;
        s=default; t=1265028261;
        bh=pRh/Z5PcdCec6zEuME4WvsuK7/Ak8EiVM8MSZ7+Iu6Y=;
        h=Subject:To:From:List-Help;
        z=Subject:=20ABC=20is=20DEF|To:=20Ram<[email protected]>|From:
         =20Ram<[email protected]>|List-Help:=20<http://mmailserver.cleanma
         il.in/intoday/?p=3Dpreferences&uid=3Ddf683742c2a89ed099aacd58bed4b
         354>;
        b=nh4GwkdJw1K8M39QQompifS0ZZk7fvakson3WrQwMGbkgb3k+IQWx5xrJQeFUp8ki
         eCUDt+IEX3bNmie2OpW8VT20/o/DEU8VPGKLEhue3GjVPre6eQwjrPIyQab5dueJaB
         avjyesqfmgFCPWmeYYOoZep+cM67PwxIUGRQNkU0=
MIME-Version: 1.0
Subject: ABC is DEF
To: Ram<[email protected]>
Date: Mon, 1 Feb 2010 14:56:11 +0530
From: Ram<[email protected]>
List-Help:
<http://mmailserver.cleanmail.in/intoday/?p=preferences&uid=df683742c2a89ed099aacd58bed4b354>
Content-Type: multipart/alternative;
        boundary="b1_1023252108"
Message-Id: <[email protected]>

<SNIP>




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