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Spam Emails from edm.cazxa.com to Sent to qq.com

This morning I woke up to approximately 2000 bounced emails from postmaster@edm.cazxa.com. Please see the sample below. It appears the emails are being sent to qq.com email addresses with a carbon copy (CC) sent to my email address. When the spam emails are ejected by qq.com, a copy of the bounced email is sent to me. And, that is how I ended up receiving almost 2000 bounced emails in my inbox.

Spam Emails from edm.cazxa.com to Sent to qq.com
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Sample of the edm.cazxa.com Bounced Email

  • Delivery report
  • From: postmaster@edm.cazxa.com
  • Reporting-MTA: dns;edm.cazxa.com
  • X-PowerMTA-VirtualMTA: localhost.com
  • Received-From-MTA: dns;swz (154.223.166.96)
  • Arrival-Date: Wed, 21 Aug 2019 09:46:47 +0800
  • Final-Recipient: rfc822;1640716785@qq.com
  • Action: failed
  • Status: 5.3.2 (system not accepting network messages)
  • Remote-MTA: dns;mx3.qq.com (203.205.219.57)
  • Diagnostic-Code: smtp;550 Connection frequency limited. http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=20022&&no=1000722 [MDThoCbEAzIXoZSHKNYZWnZu0IrdIehBR73SDBVFXWHvYiYLSJhCEaHxOa3oe8tCug== IP: 162.248.4.103]
  • X-PowerMTA-BounceCategory: other

Hello, this is the mail server on edm.cazxa.com.

I am sending you this message to inform you on the delivery status of a

message you previously sent. Immediately below you will find a list of

the affected recipients; also attached is a Delivery Status Notification

(DSN) report in standard format, as well as the headers of the original

message.

<934695409@qq.com> delivery failed; will not continue trying

Email Headers

  • X-Email-Count: 1
  • X-Source-Sender: () [162.248.4.102]:36421
  • X-Local-Domain: No
  • X-Exim-ID: 1A1erdFFxwJPj1-4KCKq7K-141ra6O90k
  • X-Source-IP: 162.248.4.102
  • Return-Path: <>
  • Received: from edm.cazxa.com (mta35.aeonmail.com [162.248.4.102]) by with SMTP;
  • Tue, 20 Aug 2019 20:30:43 -0500
  • Date: Wed, 21 Aug 2019 09:43:08 +0800
  • From: postmaster@edm.cazxa.com
  • Subject: Delivery report
  • To:
  • MIME-Version: 1.0
  • Content-Type: multipart/report; report-type=delivery-status;
  • boundary="report5D5CA1AC@edm.cazxa.com"
  • Message-ID: <322255739aae45fcbfd8db7c1808c685@com>
  • X-SmarterMail-Spam: Reverse DNS Lookup [Passed], ISpamAssassin 0 [raw: 0], DK_None, DKIM_None
  • X-SmarterMail-SpamDetail: 0.6 MISSING_MID Missing Message-Id: header
  • X-SmarterMail-TotalSpamWeight: 0
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Spam Emails from edm.cazxa.com to Sent to qq.com