This sample looks like a compromised user of a tenant with a Hotmail dropbox.
With only the single example, it's hard to deduce a larger pattern while I'm on
vacation, but ...
I've asked other team members to give it a peek.
It was marked as spam by our outbound filter:
Sent from my Windows Phone
From: Alarig Le Lay<mailto:ala...@gozmail.net>
Sent: 12/1/2016 3:20 PM
Subject: [mailop] Many spams from *.outbound.protection.outlook.com
I received many spams from Microsoft servers today. One of those is
Am I the only in that case?
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