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dmcgiv / DKIM.Net

DomainKeys Identified Mail (DKIM) and DomainKey email signing for .Net (C#)
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Signature does not verify #4

Open brendanmckenzie opened 12 years ago

brendanmckenzie commented 12 years ago

I tried using this with a HTML email and sent it to Port25's verifier and received this:

Result: fail (signature doesn't verify)

Any ideas?

brendanmckenzie commented 12 years ago

(p.s. if you don't have the time to work on this, pointers to the right direction would be much appreciated!)

dmcgiv commented 12 years ago

It would help if you posted some code and the response from Port25 in full :) Better yet upload the code to a repo so I can run it locally.

brendanmckenzie commented 12 years ago

Here you go. I'm no longer using this though - I have setup my own mail server (postfix) which DKIM/DK signs my mail for me.

Delivered-To: hello@brendanmckenzie.com Received: by 10.204.172.5 with SMTP id j5csp126731bkz; Fri, 25 May 2012 13:02:46 -0700 (PDT) Received: by 10.220.154.130 with SMTP id o2mr126085vcw.57.1337976165895; Fri, 25 May 2012 13:02:45 -0700 (PDT) Return-Path: auth-results@verifier.port25.com Received: from verifier.port25.com (verifier.port25.com. [96.244.219.19]) by mx.google.com with ESMTP id ce2si2549312vdc.130.2012.05.25.13.02.44; Fri, 25 May 2012 13:02:44 -0700 (PDT) Received-SPF: pass (google.com: domain of auth-results@verifier.port25.com designates 96.244.219.19 as permitted sender) client-ip=96.244.219.19; Authentication-Results: mx.google.com; spf=pass (google.com: domain of auth-results@verifier.port25.com designates 96.244.219.19 as permitted sender) smtp.mail=auth-results@verifier.port25.com; dkim=pass header.i=auth-results@port25.com DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; s=auth; d=port25.com; h=Date:From:To:Subject:Message-Id:In-Reply-To; i=auth-results@verifier.port25.com; bh=8cOEs5Klfput29FdEMi7ZxwM/ak=; b=4srGgD1ihzmddx/n373vG95ljR/RSNRUmWbza4AXexd/1Bxq4ZrNfGtqW4Tbrjz+z4b0YHf8a2yx Dbi8biGtuw== DomainKey-Signature: a=rsa-sha1; c=nofws; q=dns; s=auth; d=port25.com; b=Dw+UwDnOunsj7KMfvfbeIVjqBClB9BAV+yRRzyuvA0nVlYG8IlETmhrHqKEyHnjKbLD5aJQdIEZh oVjUO1C4tA==; Received: from verifier.port25.com (127.0.0.1) by verifier.port25.com id hnvim811u9ce for hello@brendanmckenzie.com; Fri, 25 May 2012 16:02:44 -0400 (envelope-from auth-results@verifier.port25.com) Date: Fri, 25 May 2012 16:02:44 -0400 From: auth-results@verifier.port25.com To: hello@brendanmckenzie.com Subject: Authentication Report Message-Id: 1337976161-753272@verifier.port25.com Precedence: junk (auto_reply) In-Reply-To: 0.0.4.38.1CD3AB157262278.0@verifier.port25.com

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 verifier-feedback@port25.com.

Thank you for using the verifier,

The Port25 Solutions, Inc. team

Summary of Results

SPF check: pass DomainKeys check: neutral DKIM check: pass DKIM check: fail Sender-ID check: pass SpamAssassin check: ham

Details:

HELO hostname: brendanmckenzie.com Source IP: 195.234.10.163 mail-from: hello@brendanmckenzie.com

SPF check details:

Result: pass ID(s) verified: smtp.mailfrom=hello@brendanmckenzie.com DNS record(s): brendanmckenzie.com. SPF (no records) brendanmckenzie.com. 3600 IN TXT "v=spf1 ip4:195.234.10.163 ~all"

DomainKeys check details:

Result: neutral (message not signed) ID(s) verified: header.From=hello@brendanmckenzie.com DNS record(s):

DKIM check details:

Result: pass (matches From: hello@brendanmckenzie.com) ID(s) verified: header.d=brendanmckenzie.com Canonicalized Headers: from:hello@brendanmckenzie.com'0D''0A' to:check-auth@verifier.port25.com'0D''0A' reply-to:no-reply@brendanmckenzie.com'0D''0A' date:25'20'May'20'2012'20'15:58:57'20'-0400'0D''0A' subject:test'20'subject'0D''0A' dkim-signature:v=1;'20'a=rsa-sha256;'20'c=relaxed/simple;'20'd=brendanmckenzie.com;'20's=default;'20't=1337976158;'20'bh=XhYXuiaowMvpN198WBaDnkLEEWoQmqH/hzImb1Y3ifQ=;'20'h=From:To:Reply-To:Date:Subject:From;'20'b=

Canonicalized Body: TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg'0D''0A' ZWxpdC4gRG9uZWMgZXQgdGVsbHVzIGxpZ3VsYSwgdmVsIGludGVyZHVtIG1hc3NhLiBN'0D''0A' YWVjZW5hcyBzb2RhbGVzIGRpZ25pc3NpbSBzb2xsaWNpdHVkaW4uIFBlbGxlbnRlc3F1'0D''0A' ZSBzaXQgYW1ldCBmZWxpcyBvZGlvLiBQcmFlc2VudCBjdXJzdXMgbGVvIHF1aXMgbmVx'0D''0A' dWUgZGljdHVtIGEgaGVuZHJlcml0IGR1aSBzZW1wZXIuIFZlc3RpYnVsdW0gYW50ZSBp'0D''0A' cHN1bSBwcmltaXMgaW4gZmF1Y2lidXMgb3JjaSBsdWN0dXMgZXQgdWx0cmljZXMgcG9z'0D''0A' dWVyZSBjdWJpbGlhIEN1cmFlOyBOdWxsYSBpZCB0ZWxsdXMgdml0YWUgcHVydXMgYWRp'0D''0A' cGlzY2luZyBtb2xlc3RpZSB1dCBhZGlwaXNjaW5nIGxvcmVtLiBEdWlzIGVsZWlmZW5k'0D''0A' IGJsYW5kaXQgaXBzdW0sIG5vbiBhdWN0b3IgZXJvcyBwbGFjZXJhdCBpbi4='0D''0A'

DNS record(s): default._domainkey.brendanmckenzie.com. 3600 IN TXT "v=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCq/unX14R0S9m2hoVpSDyZC+ckOnkv7mge7+Xzu++PYZrvKQvJV/uQNwp5wuEcN/pyk8KOiKKfrTo3JV/nd5ujgwsqU0VM9txEg78XnEX/paNGwOrU+soOnEg6GDVWYYbyw/JwtXjWBIhWOwt9XNwuU3psK7JVtHFUdaCxKyTjxwIDAQAB"

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.

DKIM check details:

Result: fail (signature doesn't verify) ID(s) verified: Canonicalized Headers: From:'20'hello@brendanmckenzie.com'0D''0A' To:'20'check-auth@verifier.port25.com'0D''0A' Subject:'20'test'20'subject'0D''0A' Reply-To:'20'no-reply@brendanmckenzie.com'0D''0A' Date:'20'25'20'May'20'2012'20'15:58:57'20'-0400'0D''0A' DKIM-Signature:'20'v=1;'20'a=rsa-sha1;'20'c=simple/simple;'20'd=brendanmckenzie.com;'0D''0A' '20'h=From:To:Subject:Reply-To:Date;'20'q=dns/txt;'20's=default;'20't=1337975934;'0D''0A' '20'bh=/AYhbXRQagVMimqSLpSK/KUVTc4=;'0D''0A' '20'b=

Canonicalized Body: TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg'0D''0A' ZWxpdC4gRG9uZWMgZXQgdGVsbHVzIGxpZ3VsYSwgdmVsIGludGVyZHVtIG1hc3NhLiBN'0D''0A' YWVjZW5hcyBzb2RhbGVzIGRpZ25pc3NpbSBzb2xsaWNpdHVkaW4uIFBlbGxlbnRlc3F1'0D''0A' ZSBzaXQgYW1ldCBmZWxpcyBvZGlvLiBQcmFlc2VudCBjdXJzdXMgbGVvIHF1aXMgbmVx'0D''0A' dWUgZGljdHVtIGEgaGVuZHJlcml0IGR1aSBzZW1wZXIuIFZlc3RpYnVsdW0gYW50ZSBp'0D''0A' cHN1bSBwcmltaXMgaW4gZmF1Y2lidXMgb3JjaSBsdWN0dXMgZXQgdWx0cmljZXMgcG9z'0D''0A' dWVyZSBjdWJpbGlhIEN1cmFlOyBOdWxsYSBpZCB0ZWxsdXMgdml0YWUgcHVydXMgYWRp'0D''0A' cGlzY2luZyBtb2xlc3RpZSB1dCBhZGlwaXNjaW5nIGxvcmVtLiBEdWlzIGVsZWlmZW5k'0D''0A' IGJsYW5kaXQgaXBzdW0sIG5vbiBhdWN0b3IgZXJvcyBwbGFjZXJhdCBpbi4='0D''0A'

DNS record(s): default._domainkey.brendanmckenzie.com. 3600 IN TXT "v=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCq/unX14R0S9m2hoVpSDyZC+ckOnkv7mge7+Xzu++PYZrvKQvJV/uQNwp5wuEcN/pyk8KOiKKfrTo3JV/nd5ujgwsqU0VM9txEg78XnEX/paNGwOrU+soOnEg6GDVWYYbyw/JwtXjWBIhWOwt9XNwuU3psK7JVtHFUdaCxKyTjxwIDAQAB"

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: header.Sender=hello@brendanmckenzie.com DNS record(s): brendanmckenzie.com. SPF (no records) brendanmckenzie.com. 3600 IN TXT "v=spf1 ip4:195.234.10.163 ~all"

SpamAssassin check details:

SpamAssassin v3.3.1 (2010-03-16)

Result: ham (-0.9 points, 5.0 required)

pts rule name description

0.0 SINGLE_HEADER_2K A single header contains 2K-3K characters -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.0 HTML_MESSAGE BODY: HTML included in message 0.7 MIME_HTML_ONLY BODY: Message only has text/html MIME parts -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.4 HTML_MIME_NO_HTML_TAG HTML-only message, but there is no HTML tag

Explanation of the possible results (from RFC 5451)

SPF and Sender-ID Results

"none" No policy records were published at the sender's DNS domain.

"neutral" The sender's ADMD has asserted that it cannot or does not want to assert whether or not the sending IP address is authorized to send mail using the sender's DNS domain.

"pass" The client is authorized by the sender's ADMD to inject or relay mail on behalf of the sender's DNS domain.

"policy" The client is authorized to inject or relay mail on behalf of the sender's DNS domain according to the authentication method's algorithm, but local policy dictates that the result is unacceptable.

"fail" This client is explicitly not authorized to inject or relay mail using the sender's DNS domain.

"softfail" The sender's ADMD believes the client was not authorized to inject or relay mail using the sender's DNS domain, but is unwilling to make a strong assertion to that effect.

"temperror" The message could not be verified due to some error that is likely transient in nature, such as a temporary inability to retrieve a policy record from DNS. A later attempt may produce a final result.

"permerror" The message could not be verified due to some error that is unrecoverable, such as a required header field being absent or a syntax error in a retrieved DNS TXT record. A later attempt is unlikely to produce a final result.

DKIM and DomainKeys Results

"none" The message was not signed.

"pass" The message was signed, the signature or signatures were acceptable to the verifier, and the signature(s) passed verification tests.

"fail" The message was signed and the signature or signatures were acceptable to the verifier, but they failed the verification test(s).

"policy" The message was signed but the signature or signatures were not acceptable to the verifier.

"neutral" The message was signed but the signature or signatures contained syntax errors or were not otherwise able to be processed. This result SHOULD also be used for other failures not covered elsewhere in this list.

"temperror" The message could not be verified due to some error that is likely transient in nature, such as a temporary inability to retrieve a public key. A later attempt may produce a final result.

"permerror" The message could not be verified due to some error that is unrecoverable, such as a required header field being absent. A later attempt is unlikely to produce a final result.

Original Email

Return-Path: hello@brendanmckenzie.com Received: from brendanmckenzie.com (195.234.10.163) by verifier.port25.com id hnvim011u9c6 for check-auth@verifier.port25.com; Fri, 25 May 2012 16:02:40 -0400 (envelope-from hello@brendanmckenzie.com) Authentication-Results: verifier.port25.com; spf=pass smtp.mailfrom=hello@brendanmckenzie.com Authentication-Results: verifier.port25.com; domainkeys=neutral (message not signed) header.From=hello@brendanmckenzie.com Authentication-Results: verifier.port25.com; dkim=pass (matches From: hello@brendanmckenzie.com) header.d=brendanmckenzie.com Authentication-Results: verifier.port25.com; dkim=fail (signature doesn't verify) Authentication-Results: verifier.port25.com; sender-id=pass header.Sender=hello@brendanmckenzie.com Received: from Maqsood-PC (unknown [75.98.195.110]) by brendanmckenzie.com (Postfix) with ESMTP id BABE5824456 for check-auth@verifier.port25.com; Fri, 25 May 2012 21:02:37 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=brendanmckenzie.com; s=default; t=1337976158; bh=XhYXuiaowMvpN198WBaDnkLEEWoQmqH/hzImb1Y3ifQ=; h=From:To:Reply-To:Date:Subject:From; b=JDGq0xDxX5x4kRSJBXwiDeVZbCg8rXkRGNPxhDQTWlW2+wv0/RJp0gs6NpMY5eevh 0SOlDdPhK0BxvQ8b9QqcXXgb8H9aL/XtQltWvYjcH/50s5JAGDjsOSzlKEVAIXd0pK 2x52dp0wLqdvSsS4Gmg16LOUxrCnwiaBqnzi8RN8= DKIM-Signature: v=1; a=rsa-sha1; c=simple/simple; d=brendanmckenzie.com; h=From:To:Subject:Reply-To:Date; q=dns/txt; s=default; t=1337975934; bh=/AYhbXRQagVMimqSLpSK/KUVTc4=; b=GqXYWHpc/IwYxoAomkTSgPSZ/9CZ4s1jDx8yhhDtSDczWiTQhXzCASmCeIrKHFNhuu8MpaVjjrd5Q07G5IOKcSSEDqabZpXrIWdypgxX9r8DWA0Hk7uDiHlmLEfpzRdNR/6DXzsnpMN3IwXVewPxDEbEP+8ZnVQkiHbZC8nWn88= MIME-Version: 1.0 Sender: hello@brendanmckenzie.com From: hello@brendanmckenzie.com To: check-auth@verifier.port25.com Reply-To: no-reply@brendanmckenzie.com Date: 25 May 2012 15:58:57 -0400 Subject: test subject Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: base64 Message-ID: 0.0.4.38.1CD3AB157262278.0@verifier.port25.com

TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg ZWxpdC4gRG9uZWMgZXQgdGVsbHVzIGxpZ3VsYSwgdmVsIGludGVyZHVtIG1hc3NhLiBN YWVjZW5hcyBzb2RhbGVzIGRpZ25pc3NpbSBzb2xsaWNpdHVkaW4uIFBlbGxlbnRlc3F1 ZSBzaXQgYW1ldCBmZWxpcyBvZGlvLiBQcmFlc2VudCBjdXJzdXMgbGVvIHF1aXMgbmVx dWUgZGljdHVtIGEgaGVuZHJlcml0IGR1aSBzZW1wZXIuIFZlc3RpYnVsdW0gYW50ZSBp cHN1bSBwcmltaXMgaW4gZmF1Y2lidXMgb3JjaSBsdWN0dXMgZXQgdWx0cmljZXMgcG9z dWVyZSBjdWJpbGlhIEN1cmFlOyBOdWxsYSBpZCB0ZWxsdXMgdml0YWUgcHVydXMgYWRp cGlzY2luZyBtb2xlc3RpZSB1dCBhZGlwaXNjaW5nIGxvcmVtLiBEdWlzIGVsZWlmZW5k IGJsYW5kaXQgaXBzdW0sIG5vbiBhdWN0b3IgZXJvcyBwbGFjZXJhdCBpbi4=