Hello all,

Is there also any CMS, contact form plugin, massively used I think
obviously to WP and its plugins, Prestashop, Magento, and everything like
that systems you can find on free download), that implement that
header described years ago ? I've not seen that on my side. Implementing
controls on ESP/ISP side is a very good point, but if nobody except few
website are using it...

Le mar. 26 nov. 2019 à 18:13, Vytis Marciulionis via mailop <
[email protected]> a écrit :

> Hi everyone,
>
> Are there any mailbox providers out there that actually check this
> Form-Sub: header?
> I remember it being discussed few years ago and I do know that this draft
> is available but, is it used by mailbox providers? It being just a draft
> and all?
>
> On Tue, Nov 26, 2019 at 5:51 PM Matt Gilbert via mailop <[email protected]>
> wrote:
>
>> Hey Carl,
>>
>> Thanks for noticing that. We’re going to get that header included in the
>> signature shortly.
>>
>>
>> Thanks,
>> Matt Gilbert
>> --
>> Deliverability Engineer | Mailchimp
>> delivery.mailchimp.com
>>
>>
>> On Nov 25, 2019, at 9:50 PM, Carl Byington via mailop <[email protected]>
>> wrote:
>>
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA512
>>
>> On Mon, 2019-11-25 at 10:32 -0800, Kurt Andersen (b) via mailop wrote:
>>
>> Are you seeing any significant portion of these messages bearing the
>> Form-Sub header? (documented in https://tools.ietf.org/html/draft-
>> levine-mailbomb-header-01)
>>
>>
>> On a low volume mail server, the only messages I see with that header
>> are also dkim signed by mail*.mcsignup.com. MailChimp are using
>>
>> h=From:Reply-To:To:Date:Message-ID:Sender:Subject:MIME-Version: Content-
>> Type;
>>
>> So their signature does not include the Form-Sub: header, contrary to
>> the recommendation in that draft.
>>
>>
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v2.0.14 (GNU/Linux)
>>
>> iEYEAREKAAYFAl3cksAACgkQL6j7milTFsG9zQCdE6YkaHRj+a4I+79b/quTXZrc
>> CsoAn1kB22Ss/Q34UIsR4zg7SIlheRC8
>> =LF9o
>> -----END PGP SIGNATURE-----
>>
>>
>>
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>
>
> --
> Pagarbiai,
> Vytis Marčiulionis
> +37064734475
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