Hi Mailop,

Below is a spoofed email; it fails SPF, has no DKIM, and fails the DMARC or the 
5322.From address:

Received: from MW2NAM12HT207.eop-nam12.prod.protection.outlook.com 
(2603:10a6:6:2d::33) by DB7PR10MB1996.EURPRD10.PROD.OUTLOOK.COM with HTTPS via 
DB6PR07CA0023.EURPRD07.PROD.OUTLOOK.COM; Mon, 18 Nov 2019 16:51:15 +0000 
Received: from MW2NAM12FT068.eop-nam12.prod.protection.outlook.com 
(10.13.180.52) by MW2NAM12HT207.eop-nam12.prod.protection.outlook.com 
(10.13.181.223) with Microsoft SMTP Server (version=TLS1_2, 
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2451.23; Mon, 18 Nov 
2019 16:51:14 +0000 Authentication-Results: spf=fail (sender IP is 
79.101.7.133) smtp.mailfrom=e.zulily.com; hotmail.com; dkim=none (message not 
signed) header.d=none;hotmail.com; dmarc=fail action=oreject 
header.from=ocadomail.com

The DMARC policy of ocadomail.com has p=reject as policy, but Microsoft's EOP 
seems to have overruled this policy (see action=oreject) and delivered the 
email to the recipient anyway.

I know ISPs can enforce a stricter policy (e.g. reject although policy is 
p=quarantine) but I don't often see ISPs applying a more lenient response than 
stated in the DMARC policy. I can think of one reason for doing so (user added 
the sender to his / her safe-sender list) and wanted to ask if you know of some 
other reasons?

Thank you,

Jon


- - - - -
Jon Burke
Deliverability Consultant

email  jon.bu...@selligent.com<mailto:jon.bu...@selligent.com>
mobile  +44 7990 069 027

SELLIGENT MARKETING CLOUD
CONSUMER-FIRST MARKETING
www.selligent.com<http://www.selligent.com/>

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