Subject: Mail delivery failed: returning message to sender
From: "Mail Delivery System" <[email-masked]>
To: <[email-masked]>
Date: Tue, 11 Jun 2024 18:03:45 +0330

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  [email-masked]
    host mail.daryarokh.com [164.138.20.220]
    SMTP error from remote mail server after RCPT
TO:<[email-masked]>:
    550 <[email-masked]> No such user here