Just out of interest, here's what the same message looks like when I change the
word "Thanks" to "Danke" in both the text AND the html versions: This is the
resulting message - which still recreates the same original message as below:
DKIM2: i=2; v=2; a=rsa-sha256; c=relaxed; d=example.com; h=cc
:content-type:content-type:date:date:dkim2:dkim2:dkim2-diff-body
:dkim2-diff-header:from:from:in-reply-to:message-id:mime-version
:reply-to:sender:sender:subject:subject:to:to; s=dkim2selector;
bh=aX5WXGUjxvhYXBnen0uFRALxbzYAByIgSj1u88Fja2M=; b=Y+WgKnZm4xx1
5MdF7awN3oReJEJ5NmWZwWDFMWMVo80eXjF6bbGl8vfikNLngVjRMFTfmpjLFOil
VPlzLSSfzyPb+w7D9b+dcrnasnhC6HlAI8X0fPGC3yZ1KMUSZHb3UW+0ps8nz/xW
PpQINMswKOVyKhMsbZpBSrAiYd/UJoA=
DKIM2-Delta-Body: i=2;
c=4-12;
b=VGhhbmtzLA==;
c=14-35;
b=ZmFtaWx5OkFyaWFsOyI+PGJyPjwvZGl2PjxkaXYgc3R5bGU9M0QiZm9udC1mYW1pbHk6QXJpYWw7Ij5UaGFua3MsPGJyPjwvPQ==;
c=37-44
DKIM2-Delta-Header: i=2;
b=Content-Type,bXVsdGlwYXJ0L2FsdGVybmF0aXZlOyBib3VuZGFyeT0xMmI1M2RjODI5ZDI0NTExYmZhMDRmN2Q1ZTM2NzVmOA==;
b=From,IkJyb24gR29uZHdhbmEiIDxicm9uZ0BmYXN0bWFpbHRlYW0uY29tPg==;
t=Sender;
t=Subject,Working group last call draft-ietf-jmap-webpush-vapid
DKIM2: i=1; ...
MIME-Version: 1.0
Message-Id: <[email protected]>
Date: Thu, 21 Mar 2024 12:09:37 +1000
To: [email protected]
Subject: [Jmap] Working group last call draft-ietf-jmap-webpush-vapid
Content-Type: multipart/mixed; boundary="===============5385250436117681394=="
Errors-To: [email protected]
Sender: "Jmap" <[email protected]>
From: Bron Gondwana <[email protected]>
--===============5385250436117681394==
Content-Type: multipart/alternative; boundary=12b53dc829d24511bfa04f7d5e3675f8
--12b53dc829d24511bfa04f7d5e3675f8
Content-Type: text/plain
Hi All,
This email starts a working group last call for
https://datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/ as discussed in
the IETF119 session.
Please post any comments or responses by *Thursday, April 4th, 2024*.
Danke,
Bron.
--
Bron Gondwana, CEO, Fastmail Pty Ltd
[email protected]
--12b53dc829d24511bfa04f7d5e3675f8
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
amily:Arial;">Hi All,<br></div><div style=3D"font-family:Arial;"><div><b=
r></div><div>This email starts a working group last call for <a href=3D"=
https://datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/";>https:/=
/datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/</a> as discusse=
d in the IETF119 session.<br></div><div style=3D"font-family:Arial;"><br=
></div><div style=3D"font-family:Arial;">Please post any comments or res=
ponses by <b>Thursday, April 4th, 2024</b>.<br></div><div style=3D"font-=
family:Arial;"><br></div><div style=3D"font-family:Arial;">Danke,<br></=
div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-famil=
y:Arial;">Bron.<br></div><div><br></div><div><br></div></div><div id=3D"=
sig56629417"><div class=3D"signature">--<br></div><div class=3D"signatur=
e"> Bron Gondwana, CEO, Fastmail Pty Ltd<br></div><div class=3D"si=
gnature"> [email protected]<br></div><div class=3D"signature"=
><br></div></div><div style=3D"font-family:Arial;"><br></div></body></ht=
ml>
--12b53dc829d24511bfa04f7d5e3675f8--
--===============5385250436117681394==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Jmap mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/jmap
--===============5385250436117681394==--
On Wed, Jun 18, 2025, at 17:21, Bron Gondwana wrote:
> The major change here is switching to line based rather than character based
> extraction from the destination message to recreate the source message.
>
> I have updated some of my examples; e.g. the message that I was testing
> against for the previous one now looks like this:
>
> Original:
> DKIM2: i=1; ...
> MIME-Version: 1.0
> Message-Id: <[email protected]>
> Date: Thu, 21 Mar 2024 12:09:37 +1000
> From: "Bron Gondwana" <[email protected]>
> To: [email protected]
> Subject: Working group last call draft-ietf-jmap-webpush-vapid
> Content-Type: multipart/alternative;
> boundary=12b53dc829d24511bfa04f7d5e3675f8
>
> --12b53dc829d24511bfa04f7d5e3675f8
> Content-Type: text/plain
>
> Hi All,
>
> This email starts a working group last call for
> https://datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/ as discussed
> in the IETF119 session.
>
> Please post any comments or responses by *Thursday, April 4th, 2024*.
>
> Thanks,
>
> Bron.
>
>
> --
> Bron Gondwana, CEO, Fastmail Pty Ltd
> [email protected]
>
>
> --12b53dc829d24511bfa04f7d5e3675f8
> Content-Type: text/html
> Content-Transfer-Encoding: quoted-printable
>
> <!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
> Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
> amily:Arial;">Hi All,<br></div><div style=3D"font-family:Arial;"><div><b=
> r></div><div>This email starts a working group last call for <a href=3D"=
> https://datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/";>https:/=
> /datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/</a> as discusse=
> d in the IETF119 session.<br></div><div style=3D"font-family:Arial;"><br=
> ></div><div style=3D"font-family:Arial;">Please post any comments or res=
> ponses by <b>Thursday, April 4th, 2024</b>.<br></div><div style=3D"font-=
> family:Arial;"><br></div><div style=3D"font-family:Arial;">Thanks,<br></=
> div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-famil=
> y:Arial;">Bron.<br></div><div><br></div><div><br></div></div><div id=3D"=
> sig56629417"><div class=3D"signature">--<br></div><div class=3D"signatur=
> e"> Bron Gondwana, CEO, Fastmail Pty Ltd<br></div><div class=3D"si=
> gnature"> [email protected]<br></div><div class=3D"signature"=
> ><br></div></div><div style=3D"font-family:Arial;"><br></div></body></ht=
> ml>
> --12b53dc829d24511bfa04f7d5e3675f8--
>
> And the mailing list copy like this (NOTE: I'm using a DKIM1 signer hence the
> duplicated `h=` fields.
>
> DKIM2: i=2; v=2; a=rsa-sha256; c=relaxed; d=example.com; h=cc
> :content-type:content-type:date:date:dkim2:dkim2:dkim2-diff-body
> :dkim2-diff-header:from:from:in-reply-to:message-id:mime-version
> :reply-to:sender:sender:subject:subject:to:to; s=dkim2selector;
> bh=+UCZHtMZyytbykMD6d7ParYHcts6KYUonxc+lHi99AI=; b=iunaXi6iqbtB
> fNPGpnblgdEnnVLR+obl98o5hAwScwjp2gF8EVUcMtLcF53mW/btT8k2T1ryByv9
> WPtmuiVy5lfhmUXr9lHAiS48ppwDAPXiBKOCSKSXBYwxl2yM3CadWD9CY975v0/c
> YWvK+oczLB1sI0ctgNky6YI6Uk8XkPI=
> *DKIM2-Delta-Body: i=2;
> c=4-44*
> DKIM2-Delta-Header: i=2;
>
> b=Content-Type,bXVsdGlwYXJ0L2FsdGVybmF0aXZlOyBib3VuZGFyeT0xMmI1M2RjODI5ZDI0NTExYmZhMDRmN2Q1ZTM2NzVmOA==;
> b=From,IkJyb24gR29uZHdhbmEiIDxicm9uZ0BmYXN0bWFpbHRlYW0uY29tPg==;
> t=Sender;
> t=Subject,Working group last call draft-ietf-jmap-webpush-vapid
> DKIM2: i=1; ...
> MIME-Version: 1.0
> Message-Id: <[email protected]>
> Date: Thu, 21 Mar 2024 12:09:37 +1000
> To: [email protected]
> Subject: [Jmap] Working group last call draft-ietf-jmap-webpush-vapid
> Content-Type: multipart/mixed; boundary="===============5385250436117681394=="
> Errors-To: [email protected]
> Sender: "Jmap" <[email protected]>
> From: Bron Gondwana <[email protected]>
>
> --===============5385250436117681394==
> Content-Type: multipart/alternative; boundary=12b53dc829d24511bfa04f7d5e3675f8
>
> --12b53dc829d24511bfa04f7d5e3675f8
> Content-Type: text/plain
>
> Hi All,
>
> This email starts a working group last call for
> https://datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/ as discussed
> in the IETF119 session.
>
> Please post any comments or responses by *Thursday, April 4th, 2024*.
>
> Thanks,
>
> Bron.
>
>
> --
> Bron Gondwana, CEO, Fastmail Pty Ltd
> [email protected]
>
>
> --12b53dc829d24511bfa04f7d5e3675f8
> Content-Type: text/html
> Content-Transfer-Encoding: quoted-printable
>
> <!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
> Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
> amily:Arial;">Hi All,<br></div><div style=3D"font-family:Arial;"><div><b=
> r></div><div>This email starts a working group last call for <a href=3D"=
> https://datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/";>https:/=
> /datatracker.ietf.org/doc/draft-ietf-jmap-webpush-vapid/</a> as discusse=
> d in the IETF119 session.<br></div><div style=3D"font-family:Arial;"><br=
> ></div><div style=3D"font-family:Arial;">Please post any comments or res=
> ponses by <b>Thursday, April 4th, 2024</b>.<br></div><div style=3D"font-=
> family:Arial;"><br></div><div style=3D"font-family:Arial;">Thanks,<br></=
> div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-famil=
> y:Arial;">Bron.<br></div><div><br></div><div><br></div></div><div id=3D"=
> sig56629417"><div class=3D"signature">--<br></div><div class=3D"signatur=
> e"> Bron Gondwana, CEO, Fastmail Pty Ltd<br></div><div class=3D"si=
> gnature"> [email protected]<br></div><div class=3D"signature"=
> ><br></div></div><div style=3D"font-family:Arial;"><br></div></body></ht=
> ml>
> --12b53dc829d24511bfa04f7d5e3675f8--
>
>
> --===============5385250436117681394==
> Content-Type: text/plain; charset="us-ascii"
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Content-Disposition: inline
>
> _______________________________________________
> Jmap mailing list
> [email protected]
> https://www.ietf.org/mailman/listinfo/jmap
>
> --===============5385250436117681394==--
>
> So it's just keeping lines 4-44 from the message, removing the MIME wrapper
> and trailing signature to recreate the original message.
>
> Bron.
>
> On Wed, Jun 18, 2025, at 17:09, [email protected] wrote:
>> A new version of Internet-Draft
>> draft-gondwana-dkim2-modification-alegbra-02.txt has been successfully
>> submitted by Bron Gondwana and posted to the
>> IETF repository.
>>
>> Name: draft-gondwana-dkim2-modification-alegbra
>> Revision: 02
>> Title: A method for describing changes made to an email
>> Date: 2025-06-18
>> Group: dkim
>> Pages: 6
>> URL:
>> https://www.ietf.org/archive/id/draft-gondwana-dkim2-modification-alegbra-02.txt
>> Status:
>> https://datatracker.ietf.org/doc/draft-gondwana-dkim2-modification-alegbra/
>> HTMLized:
>> https://datatracker.ietf.org/doc/html/draft-gondwana-dkim2-modification-alegbra
>> Diff:
>> https://author-tools.ietf.org/iddiff?url2=draft-gondwana-dkim2-modification-alegbra-02
>>
>> Abstract:
>>
>> This memo describes a method for describing the changes made to an
>> email during common email modifications, for example those caused by
>> mailing lists and forwarders.
>>
>> While this is general enough to be used for any changes, it is
>> anticipated that this method will normally be used for removing added
>> data rather than large complex changes.
>>
>>
>>
>> The IETF Secretariat
>>
>>
>>
>
> --
> Bron Gondwana, CEO, Fastmail Pty Ltd
> [email protected]
>
>
--
Bron Gondwana, CEO, Fastmail Pty Ltd
[email protected]
_______________________________________________
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