Subject: Mail delivery failed: returning message to sender
From: "Mail Delivery System" <[email-masked]>
To: <[email-masked]>
Date: Fri, 15 Mar 2024 00:46:31 +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 smtp-in.libero.it [213.209.1.129]
    SMTP error from remote mail server after RCPT TO:<[email-masked]>:
    550 Invalid Recipient <[email-masked]>  [smtp-14.iol.local;
LIB_520]