I put these domains which is in the SMTP header into the blocked Senders list:
domain
datastax.com
marketo.org
mktomail.com
mktroute.com

But this email still gets through, and my safe list is empty.No entry in it.
Would you please tell me What am I doing wrong?

Here is the header of this spam:

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ALVHTXW01 corp (ip) with Microsoft SMTP Server id
xxxxx ; Fri, 27 May 2016 08:05:34 -0700
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Date: Fri, 27 May 2016 10:04:37 -0500
From: DataStax News <cassandra.news@datastax.com>
Reply-To: <cassandra.news@datastax.com>
To: <xxxxxxxxxxxx>
Message-ID: <2100078452.-1500800888.1464361477380.JavaMail.root@abmas02.mar keto.org>
Subject: Netflix Processes 10 Million Transactions Per Second to Deliver the
Ultimate Streaming Experience
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