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On Tue, 2020-08-18 at 12:03 +0000, Andy Smith via mailop wrote:
> From: "chiark.greenend.org.uk" <i...@chilitato.com>
So sendgrid account 15204622 was sending mail as:
Received: from dhl.com (unknown)
by ismtpd0005p1lon1.sendgrid.net (SG)
with ESMTP id 0c6xV8agQF6yK8GOsXvJLw
for <$munged>;
Tue, 18 Aug 2020 05:18:02.219 +0000 (UTC)
From: DHL <i...@dhl.com>
Subject: Shipment for $munged
They allow outbound mail with a from: header in dlh.com, even though:
dig _dmarc.dhl.com txt +short
reject.valimail.dmarc.dhl.com.
"v=DMARC1; p=reject; fo=0; rua=mailto:dmarc-
repo...@dhl.com,mailto:dmarc_agg@vali.email;";
dhl is asking folks to reject that mail, but sendgrid tries to send it
anyway.
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