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Re: Broken DKIM header in mailing list

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Hello,


Am 06.01.2021 um 13:02 schrieb Michael Schierl:
> Hello Simon,
>
>
> Am 06.01.2021 um 10:21 schrieb Simon Ser:
>> Hi Michael,
>>
>>> For Virgil's emails (where I was not in Cc), the headers were broken.
>>
>> Can you provide the raw source for this mungled message? It would be
>> helpful to compare it to the message stored by lists.sr.ht.


resent for the mailing list. The bounce from the mailing list
complaining about the attachment also had a broken DKIM header.

The original attachment is available (for 14 days) at

https://transfer.sh/6RNj3/sourcehut-emails.zip


> One of the messages (corresponding to
> https://lists.sr.ht/~vdupras/collapseos/%3C20201214204816.GA27005%40tocqueville%3E/raw)
> as a raw .mbox export is included in the attached .zip file.
>
> Seems that the archive stores the headers of the email as it was
> received (not as it was sent) so the malformed DKIM header is not yet
> present there.
>
> I also set up a SMTP server on a VM on my home box and configured it for
> a dyndns email domain. Then I registered (once again) for a sr.ht
> account and captured the traffic from mail-b.sr.ht [173.195.146.151] to
> my machine with Wireshark. The dump (containing only one TCP stream that
> clearly shows the malformed DKIM header) is also in the attached .zip file.
>
>
> Regards,
>
>
> Michael
>
>
> PS: No need to try to reach (or exploit) that test email server, it has
> already been deconfigured again.
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