Re: Gmail (thus Nanog) rejecting ipv6 email

[Michael Thomas <mike () mtcc com>]

On 4/3/22 12:12 PM, Bjørn Mork wrote:
> On a slightly related subject... This DKIM failure surprised me, but at
> least I verified that many NANOG subscribers have mailservers returning
> DMARC failure reports ;-)

Oh wow, you should report that to Murray.

Mike

> Bjørn Mork <bjorn () mork no> writes:
>
> > Authentication-Results: mx.google.com;
> >   dkim=fail header.i=@mork.no header.s=b header.b=NB0BT8Ez;
> >   spf=pass (google.com: best guess record for domain of bjorn () miraculix mork no
> >   designates 2001:41c8:51:8a:feff:ff:fe00:e5 as permitted sender)
> >   smtp.mailfrom=bjorn () miraculix mork no;
> >   dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mork.no
> > Received: from canardo.dyn.mork.no ([IPv6:2a01:799:c9f:8600:0:0:0:1])
> >   (authenticated bits=0)
> >   by louie.mork.no (8.15.2/8.15.2) with ESMTPSA id 233IGnGC342047
> >   (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=OK);
> >   Sun, 3 Apr 2022 19:16:50 +0100
> > Received: from miraculix.mork.no ([IPv6:2a01:799:c9f:8602:8cd5:a7b0:d07:d516])
> >   (authenticated bits=0)
> >   by canardo.dyn.mork.no (8.15.2/8.15.2) with ESMTPSA id 233IGnKb1147676
> >   (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=OK);
> >   Sun, 3 Apr 2022 20:16:49 +0200
> > DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mork.no; s=b;
> >   t=1649009809; bh=ZByFGHIiZPQYmJjQnCv16CXFZhKG8U3fTayR+Mx3piY=;
> >   h=From:To:Cc:Subject:References:Date:Message-ID:From;
> >   b=NB0BT8EzJBl2E3jzDaz7QY4C/utMGKFF+HCs8qjQFoHA4JHTD21ZkTk34jp2VOiJ0
> >   pYWHUNXCNaEBK44Hr4U96h5pfXor+dqo0cSuRPTLNnRsoLAQg2kqmQkvylagdeezZc
> >   4p+jQEQv5La2KbjzEIvW6iSGwwe4ltT9hu7h0H8U=
> > Received: (nullmailer pid 389787 invoked by uid 1000);
> >   Sun, 03 Apr 2022 18:16:48 -0000
> > From: =?utf-8?Q?Bj=C3=B8rn_Mork?= <bjorn () mork no>
> > To: Randy Bush <randy () psg com>
> > Cc: John Levine <johnl () iecc com>,
> >          "North American Network Operators' Group" <nanog () nanog org>
> > Subject: Re: Gmail (thus Nanog) rejecting ipv6 email
> > Organization: m
> > References: <875ynqcvsl.fsf () miraculix mork no>
> >   <20220403164123.4CE413A4B99C () ary qy> <m28rsmjbu9.wl-randy () psg com>
> > Date: Sun, 03 Apr 2022 20:16:48 +0200
> > In-Reply-To: <m28rsmjbu9.wl-randy () psg com> (Randy Bush's message of "Sun, 03
> >   Apr 2022 10:50:06 -0700")
> > Message-ID: <87v8vqav73.fsf () miraculix mork no>
>
> Did a little testing, and it looks like opendkim create a bogus
> signature if a quoted-string diplay name in a To or Cc headers contains
> an apostrophe. Not good at all.
>
>
> Bjørn