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.
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