Subject: Mail Delivery Failure
From: Mail Delivery System <[email-masked]>
To: <[email-masked]>
Date: Fri, 29 Jan 2021 21:13:32 +0000

This is the mail delivery agent at Symantec Email Security.cloud.

I was unable to deliver your message to the following addresses:

[email-masked]

Reason: 550 5.7.1 Message rejected as spam by Content Filtering.

The message subject was: I don’t feel so safe with anyone.
The message date was: Sat, 30 Jan 2021 00:13:15 +0300
The message identifier was: 30/45-11389-67A74106
The message reference was: server-24.tower-271.messagelabs.com!1611954803!1604401!1

Please do not reply to this email as it is sent from an unattended mailbox.
Contact your email administrator if you need more information, or
instructions for resolving this issue.