Subject: Mail Delivery Failure
From: Mail Delivery System <[email-masked]>
To: <[email-masked]>
Date: Wed, 26 Oct 2022 21:44:19 +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 Relaying is not permitted

The message subject was: SPAM:  Emily esp
The message date was: Wed, 26 Oct 2022 23:42:52 +0200
The message identifier was: E6/CE-02830-23AA9536
The message reference was: server-7.tower-582.messagelabs.com!1666820655!166947!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.