[GLLUG] British Gas DKIM failure?

[Andy Smith]

Hello,

On Fri, Jan 12, 2024 at 03:48:17PM +0000, Henrik Morsing via GLLUG wrote:
> The problem is, not receiving the email, how can I find out what
> the problem is? mxtoolbox says their setup is fine, but that
> surely can't check the signature inside one of their emails.

The last two emails I got from britishgas were as follows

KIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; s=50dkim1;
        d=mail.energy.britishgas.co.uk;
        h=From:To:Subject:Date:List-Help:MIME-Version:Reply-To:List-ID:
        X-CSA-Complaints:Message-ID:Content-Type;
        i=service at mail.energy.britishgas.co.uk;
        bh=QMYT+RDkU4FYUyf7M4FXTSUBCO1hzJNcsLmSKfzziAs=;
        b=hfEOZ/D56Cu8Rq3xGoqQ8gl0r3DkeHnoOD0a8VhimuW8NX111M4dZrW16lwjTzI6sMK/mimu8/fq
        uilPS//eo9auRP63DzW6nMXls/0yFga1YTqRIB2Jra5qx82L23BOdIbltllAM9F2nQ9uw5ndg+7L
        C2woxf/xLEqSeCWZoG6NM5vyG1/hTxvReikCLwMe5ZIvVc4+So2TTIj56+LL/NfvuWaQd6K02JLQ
        53qIHHxmeODjdBbY9d0hwonw75Y13qxLZWM8Rt+LkscAp5+YXt7PleTSwmBO4BeRYO3mianhQQ9T
        dXg1JbS0QZMV4mTCPN582dSVdIrM4WmVmtvm4g==
From: British Gas Energy <service at mail.energy.britishgas.co.uk>
Date: Wed, 22 Nov 2023 07:36:27 -0600
X-Spam-ASN: AS14340 161.71.0.0/17

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; s=50dkim1;
        d=mail.energy.britishgas.co.uk;
        h=From:To:Subject:Date:List-Help:MIME-Version:Reply-To:List-ID:
        X-CSA-Complaints:Message-ID:Content-Type;
        i=service at mail.energy.britishgas.co.uk;
        bh=B+srJaEDKRO05DxBfcpT59B2n5VWQfXHWAmvNYAA4vo=;
        b=Gxs6BnfoCDd45O/19TTBdE032a3Pzboox3XiSKEFzfp25HvWOpgwISOvNQB9yDtvM1Rh/Xna0K2r
        9ZiErJKjDKyospCH+EQr+zGxVES3M+HYWu4bWumZoFP9mUMH4WGqAEec75HTzBjntDUmbHglOLiN
        /AaFB0JmPiVub4sxrSAz1g1T7RzzMuWHjwhsJs89wEqcJe7nmd7iEAQ02dipPdxnWKfh0l2EUBwY
        kjHZP8gdJkBlHjgJtkpqMpHc8aP92qqBGIZZnrXTbwM2rn7Gpf0HdyR7T8RrXpqbBPbpdiJj7NIt
        rDnpxUjSxM+HtRjY5mMjV/0xHEgobmHW63bpuw==
From: British Gas Energy <service at mail.energy.britishgas.co.uk>
Date: Fri, 08 Dec 2023 05:03:30 -0600
X-Spam-ASN: AS14340 161.71.0.0/17

They both passed DKIM, and both came from Salesforce IP space. From
161.71.69.229 to be exact.

Thanks,
Andy

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