Question : Stuck on a DKIM Issue

Hi,

I an effort to setup a good mail service I have implemented DKIM in addition to spf.
All seemed to work fine but I have some issues with the signature and hope that maybe someone has the same issue and resolved it.
I did make lots of research and several people did indicate they had the issue but for some reason there is no definitive answer that assists me to resolve this on my system.
I run Linux RHEL 5 64bit - Sendmail - DKIM-filter

If I send a email to google it indicates "dkim=neutral (no key) [email protected]" I tried hard but I do not understand this. I do have a private and public key and all should be there.
I do start the filter with:

dkim-filter -l -p inet:8891@localhost -b sv -c simple -d dmni.com -k /var/db/domainkeys/mail.key.pem -s mail -R -u dkim

the key folder and file us assigned to the user dkim
The dns has the entry:

mail._domainkey.dmni.com. 300 IN TXT v=DKIM1; g=; k=rsa; p=MHww ... AB

Here is what google says and see below this the test at [email protected].com

Delivered-To: [email protected]
Received: by 10.220.92.139 with SMTP id r11cs61468vcm;
Fri, 3 Jul 2009 23:43:23 -0700 (PDT)
Received: by 10.90.101.7 with SMTP id y7mr775242agb.5.1246689803600;
Fri, 03 Jul 2009 23:43:23 -0700 (PDT)
Return-Path:
Received: from app2.dmni.com (app2.dmni.com [174.143.94.154])
by mx.google.com with ESMTP id 5si10643557gxk.91.2009.07.03.23.43.22;
Fri, 03 Jul 2009 23:43:22 -0700 (PDT)
Received-SPF: pass (google.com: domain of [email protected] designates 174.143.94.154 as permitted sender) client-ip=174.143.94.154;
Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 174.143.94.154 as permitted sender) [email protected]; dkim=neutral (no key) [email protected]
Received: from [127.0.0.1] ([120.138.81.35])
      (authenticated bits=0)
      by app2.dmni.com (8.13.8/8.13.8) with ESMTP id n646hTG4028468
      for ; Sat, 4 Jul 2009 02:43:31 -0400
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=dmni.com; s=mail;
      t=1246689812; bh=VYvGzrJLAW0zN632OqvdJBG0N7/3BUpw9XazPKuv+wE=;
      h=Message-ID:Date:From:Reply-To:MIME-Version:To:Subject:
       Content-Type:Content-Transfer-Encoding;
      b=oidJm99ubX8ljlG2e+Sla9IP5X3ziSpIYC03irrtyd2SRL0K2gbkgYaiFPSUr3fUq
       SRuzSUl+Y98RpeRFQYwM2iEu7NkhbO+v2b3WLebaLNpNigbx+8SCydR0o41iUVW
Message-ID: <[email protected]>
Date: Sat, 04 Jul 2009 14:43:17 +0800
From: Thomas Bernthaler
Reply-To: [email protected]
Organization: DMNI
User-Agent: Thunderbird 2.0.0.22 (Windows/20090605)
MIME-Version: 1.0
To: [email protected]
Subject: test new
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

[email protected].com test:

==========================================================
Summary of Results
==========================================================
SPF check: pass
DomainKeys check: neutral
DKIM check: pass
Sender-ID check: pass
SpamAssassin check: ham

==========================================================
Details:
==========================================================

HELO hostname: app2.dmni.com
Source IP: 174.143.94.154
mail-from: [email protected]

----------------------------------------------------------
SPF check details:
----------------------------------------------------------
Result: pass
ID(s) verified: [email protected]
DNS record(s):
dmni.com. 300 IN TXT "v=spf1 ip4:174.143.94.154 a:n2b.bullet.mail.aue.yahoo.com a:n1b.bullet.mail.aue.yahoo.com a:smtp1.tnz.mail.vip.aue.yahoo.com a:send.tnz.yahoo.com -all"

----------------------------------------------------------
DomainKeys check details:
----------------------------------------------------------
Result: neutral (message not signed)
ID(s) verified: [email protected]m
DNS record(s):

----------------------------------------------------------
DKIM check details:
----------------------------------------------------------
Result: pass (matches From: [email protected])
ID(s) verified: header.d=dmni.com
Canonicalized Headers:
Message-ID:'20'<4A5171B8.7080102@dmni.com>'0D''0A'
Date:'20'Mon,'20'06'20'Jul'20'2009'20'11:38:32'20'+0800'0D''0A'
From:'20'Thomas'20'Bernthaler'20'omas@dmni.com>'0D''0A'
Reply-To:'20'[email protected]om'0D''0A'
MIME-Version:'20'1.0'0D''0A'
To:'20'check-auth@verifier.port25.com'0D''0A'
Subject:'20'test'0D''0A'
Content-Type:'20'text/plain;'20'charset=ISO-8859-1;'20'format=flowed'0D''0A'
Content-Transfer-Encoding:'20'7bit'0D''0A'
DKIM-Signature:'20'v=1;'20'a=rsa-sha256;'20'c=simple/simple;'20'd=dmni.com;'20's=mail;'0D''0A'
'09't=1246851522;'20'bh=eia2az/UdYM0rrrQdlzT2J7mtRFp+U90A+31+SxljOA=;'0D''0A'
'09'h=Message-ID:Date:From:Reply-To:MIME-Version:To:Subject:'0D''0A'
'09''20'Content-Type:Content-Transfer-Encoding;'0D''0A'
'09'b=

Canonicalized Body:
This'20'is'20'a'20'DKIM'20'test'0D''0A'

DNS record(s):
mail._domainkey.dmni.com. 300 IN TXT "v=DKIM1; g=; k=rsa; p=MHwwDQYJKoZIhvcNAQEBBQADawAwaAJhALhSt5fje4cHHR2f6r61Hx8uup/qbnJo MGIYnvXiH1moNDtBt2QaW/uDtoRfzQgKG9X9Kv3ZnuSeHwvWMW17UgpK3uHk/OrB 9AM/+YSfzjL3dj2no7iR+JBpx7wQ0R17kwIDAQAB"

NOTE: DKIM checking has been performed based on the latest DKIM specs
(RFC 4871 or draft-ietf-dkim-base-10) and verification may fail for
older versions. If you are using Port25's PowerMTA, you need to use
version 3.2r11 or later to get a compatible version of DKIM.

----------------------------------------------------------
Sender-ID check details:
----------------------------------------------------------
Result: pass
ID(s) verified: [email protected]m
DNS record(s):
dmni.com. 300 IN TXT "v=spf1 ip4:174.143.94.154 -all"

Did anyone actually resolve this and can let me know what i do wrong. I am on this much to long and have reached the end of my ideas what else to do to get this done.

Thank you all for the assistance.

Best wishes,
Thom

Answer : Stuck on a DKIM Issue

Hi,
After some research I was told that this t= is added by google. However this still does not explain the test I get back.
It says in all DKIM tests "DomainKeys check: neutral (message not signed)"

Here is the port25.com report:

This message is an automatic response from Port25's authentication verifier
service at verifier.port25.com. The service allows email senders to perform
a simple check of various sender authentication mechanisms. It is provided
free of charge, in the hope that it is useful to the email community. While
it is not officially supported, we welcome any feedback you may have at
<[email protected]om>.

Thank you for using the verifier,

The Port25 Solutions, Inc. team

==========================================================
Summary of Results
==========================================================
SPF check: pass
DomainKeys check: neutral
DKIM check: pass
Sender-ID check: pass
SpamAssassin check: ham

==========================================================
Details:
==========================================================

HELO hostname: app2.dmni.com
Source IP: 174.143.94.154
mail-from: [email protected]

----------------------------------------------------------
SPF check details:
----------------------------------------------------------
Result: pass
ID(s) verified: [email protected]
DNS record(s):
dmni.com. 300 IN TXT "v=spf1 ip4:174.143.94.154 a:n2b.bullet.mail.aue.yahoo.com a:n1b.bullet.mail.aue.yahoo.com a:smtp1.tnz.mail.vip.aue.yahoo.com a:send.tnz.yahoo.com -all"

----------------------------------------------------------
DomainKeys check details:
----------------------------------------------------------
Result: neutral (message not signed)
ID(s) verified: [email protected]m
DNS record(s):

----------------------------------------------------------
DKIM check details:
----------------------------------------------------------
Result: pass (matches From: [email protected])
ID(s) verified: header.d=dmni.com
Canonicalized Headers:
Message-ID:'20'<4A5B300B.40[email protected]om>'0D''0A'
Date:'20'Mon,'20'13'20'Jul'20'2009'20'21:00:59'20'+0800'0D''0A'
From:'20'Thomas'20'Bernthaler'20'<tho[email protected]om>'0D''0A'
Reply-To:'20'[email protected]om'0D''0A'
MIME-Version:'20'1.0'0D''0A'
To:'20'check-auth@verifier.port25.com'0D''0A'
Subject:'20'test'0D''0A'
Content-Type:'20'text/plain;'20'charset=ISO-8859-1;'20'format=flowed'0D''0A'
Content-Transfer-Encoding:'20'7bit'0D''0A'
DKIM-Signature:'20'v=1;'20'a=rsa-sha256;'20'c=simple/simple;'20'd=dmni.com;'20's=mail;'0D''0A'
'09't=1247490066;'20'bh=JE9Gfi39GhBk165qkC2jLAl4IXkbD59SakU2kuy3Tt4=;'0D''0A'
'09'h=Message-ID:Date:From:Reply-To:MIME-Version:To:Subject:'0D''0A'
'09''20'Content-Type:Content-Transfer-Encoding;'0D''0A'
'09'b=

Canonicalized Body:
test'0D''0A'
'0D''0A'
--'20''0D''0A'
_'0D''0A'
'20''20''20''20''20''20''20''20''20''20'DMNI'20'-'20'Global'20'Business'20'Strategies'0D''0A'
-----------------------------------------------------'0D''0A'
'20''20''20''20''20''20''20'Tel.:'20'(954)'20'376-4592'20'or'20'(954)'20'779-6314'0D''0A'
E-Mail:'20'[email protected]'20'-'20'Internet:'20'http://www.dmni.com'0D''0A'
_'0D''0A'

DNS record(s):
mail._domainkey.dmni.com. 300 IN TXT "v=DKIM1; g=*; k=rsa; p=MHwwDQYJKoZIhvcNAQEBBQADawAwaAJhALhSt5fje4cHHR2f6r61Hx8uup/qbnJo MGIYnvXiH1moNDtBt2QaW/uDtoRfzQgKG9X9Kv3ZnuSeHwvWMW17UgpK3uHk/OrB 9AM/+YSfzjL3dj2no7iR+JBpx7wQ0R17kwIDAQAB"

NOTE: DKIM checking has been performed based on the latest DKIM specs
(RFC 4871 or draft-ietf-dkim-base-10) and verification may fail for
older versions. If you are using Port25's PowerMTA, you need to use
version 3.2r11 or later to get a compatible version of DKIM.

----------------------------------------------------------
Sender-ID check details:
----------------------------------------------------------
Result: pass
ID(s) verified: [email protected]m
DNS record(s):
dmni.com. 300 IN TXT "v=spf1 ip4:174.143.94.154 a:n2b.bullet.mail.aue.yahoo.com a:n1b.bullet.mail.aue.yahoo.com a:smtp1.tnz.mail.vip.aue.yahoo.com a:send.tnz.yahoo.com -all"

----------------------------------------------------------
SpamAssassin check details:
----------------------------------------------------------
SpamAssassin v3.2.5 (2008-06-10)

Result: ham (-0.2 points, 5.0 required)

pts rule name description
---- ---------------------- --------------------------------------------------
-0.0 SPF_PASS SPF: sender matches SPF record
-2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1%
[score: 0.0000]
2.2 TVD_SPACE_RATIO BODY: TVD_SPACE_RATIO
0.6 RCVD_IN_SORBS_WEB RBL: SORBS: sender is a abuseable web server
[120.138.81.35 listed in dnsbl.sorbs.net]
-0.4 AWL AWL: From: address is in the auto white-list

==========================================================
Explanation of the possible results (adapted from
draft-kucherawy-sender-auth-header-04.txt):
==========================================================

"pass"
the message passed the authentication test.

"fail"
the message failed the authentication test.

"softfail"
the message failed the authentication test, and the authentication
method has either an explicit or implicit policy which doesn't require
successful authentication of all messages from that domain.

"neutral"
the authentication method completed without errors, but was unable
to reach either a positive or a negative result about the message.

"temperror"
a temporary (recoverable) error occurred attempting to authenticate
the sender; either the process couldn't be completed locally, or
there was a temporary failure retrieving data required for the
authentication. A later retry may produce a more final result.

"permerror"
a permanent (unrecoverable) error occurred attempting to
authenticate the sender; either the process couldn't be completed
locally, or there was a permanent failure retrieving data required
for the authentication.

==========================================================
Original Email
==========================================================

Return-Path: <[email protected]>
Received: from app2.dmni.com (174.143.94.154) by verifier.port25.com (PowerMTA(TM) v3.6a1) id hbcnak0hse8k for <[email protected].com>; Mon, 13 Jul 2009 08:55:06 -0400 (envelope-from <[email protected]>)
Authentication-Results: verifier.port25.com [email protected]; mfrom=pass;
Authentication-Results: verifier.port25.com [email protected]m; domainkeys=neutral (message not signed);
Authentication-Results: verifier.port25.com header.d=dmni.com; dkim=pass (matches From: [email protected]);
Authentication-Results: verifier.port25.com [email protected]m; pra=pass;
Received: from [127.0.0.1] ([120.138.81.35])
      (authenticated bits=0)
      by app2.dmni.com (8.13.8/8.13.8) with ESMTP id n6DD13Qg008038
      for <[email protected].com>; Mon, 13 Jul 2009 09:01:05 -0400
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=dmni.com; s=mail;
      t=1247490066; bh=JE9Gfi39GhBk165qkC2jLAl4IXkbD59SakU2kuy3Tt4=;
      h=Message-ID:Date:From:Reply-To:MIME-Version:To:Subject:
       Content-Type:Content-Transfer-Encoding;
      b=d668xqR0fnl3kjXPMHzMqNS/DabjurYDQgEI8HACOB5hqGmZ/GpxR/067KUnGbCE0
       93kyqRVsZ7v5Sal8pBGkhlH1Er1lwY4N/jA2ep/t5q8NELlTRAjFFvaHZkiYMLJ
Message-ID: <[email protected]>
Date: Mon, 13 Jul 2009 21:00:59 +0800
From: Thomas Bernthaler <[email protected]>
Reply-To: [email protected]
Organization: DMNI
User-Agent: Thunderbird 2.0.0.22 (Windows/20090605)
MIME-Version: 1.0
To: [email protected].com
Subject: test
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

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