Subject: Delivery Status Notification
From: Mail Delivery Service <[email-masked]>
To: [email-masked]
Date: Tue, 15 Nov 2022 14:08:06 +0100

- These recipients of your message have been processed by the mail server:
[email-masked]; Failed; 5.5.0 (other or undefined protocol status)

    Remote MTA mx2.inbox.lv: SMTP diagnostic: 554 5.7.1 <[email-masked]>: Recipient address rejected: User unknown - [email-masked]