Subject: Undeliverable: Love forever.
From: [email-masked]
To: [email-masked]
Date: Fri, 29 Jan 2021 15:48:54 -0500

Your message did not reach some or all of the intended recipients.

   Sent: Fri, 29 Jan 2021 23:48:44 +0300
   Subject: Love forever.

The following recipient(s) could not be reached:

[email-masked]
   Error Type: SMTP
   Remote server (207.245.2.37) issued an error.
   hMailServer sent: RCPT TO:<[email-masked]>
   Remote server replied: 550 5.1.1 Recipient address rejected: User unknown