Subject: Returned mail: see transcript for details
From: Mail Delivery Subsystem <[email-masked]>
To: <[email-masked]>
Date: Tue, 15 Nov 2022 18:45:35 +0000

The original message was received at Tue, 15 Nov 2022 18:45:33 +0000
from [108.170.60.122]

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: 550 5.1.1  <[email-masked]>: Recipient address rejected: User unknown in local recipient table)
    (expanded from: <[email-masked]>)

   ----- Transcript of session follows -----
... while talking to [193.213.115.10]:
>>> RCPT To:<[email-masked]> ORCPT=rfc822;[email-masked]
<<< 550 5.1.1  <[email-masked]>: Recipient address rejected: User unknown in local recipient table
550 5.1.1 <[email-masked]>... User unknown