Does anyone know who is the admin for kvack.org?
I was cleaning my GMail spam mail box and saw lots of messages from
Jann Horn in the spam filter. Since he is not a spammer I investigated
what is going on.
I see it is because GMail is flagging all of Jann's messages as having
a DKIM failure and Jann's employeer domain 'google.com' is enforcing a
DMARC policy:
Authentication-Results: mx.google.com;
dkim=neutral (body hash did not verify) header.i=@google.com header.s=20161025 header.b=UzPVodG7;
spf=pass (google.com: domain of owner-linux-mm@xxxxxxxxx designates 205.233.56.17 as permitted sender) smtp.mailfrom=owner-linux-mm@xxxxxxxxx;
dmarc=fail (p=REJECT sp=REJECT dis=QUARANTINE) header.from=google.com
Selecting a message from Jann that went through LKML and kvack:
https://lore.kernel.org/lkml/20201015000041.1734214-1-jannh@xxxxxxxxxx/raw
https://lore.kernel.org/linux-mm/20201015000041.1734214-1-jannh@xxxxxxxxxx/raw
And checking the DKIM:
$ opendkim-testmsg < raw.lkml
$ opendkim-testmsg < raw.mm
opendkim-testmsg: dkim_eom(): Bad signature
Confirms that Jann sent the message correctly, but kvack is breaking
the signature while vger is not. The DMARC policy on Jann's email is
causing receivers to junk his email as spam. I expect I'm not the only
one.
I see that kvack is modifying the message in transit. Notably it
changed the transfer encoding from
Content-Transfer-Encoding: 8bit
to
Content-Transfer-Encoding: quoted-printable
And mangled the body accordingly. Changing the
Content-Transfer-Encoding definitely breaks the signature.
This seems to be a fairly big problem - it is extra hard for people to
contribute. Setting up a text based email flow is already hard, but
having to also somehow obtain an email address that doesn't use DMARC
is becoming an increasingly tough bar to clear.
eg what will people even do if/when Google decides to enable DMARC on
gmail.com as well?
Is it possible that this list software can be reconfigured to match
the vger lists that do seem to work OK?
Is moving the list to vger an option?
Thanks,
Jason
