Subject: Mail delivery failed: returning message to sender
From: "Mail Delivery System" <[email-masked]>
To: <[email-masked]>
Date: Sat, 16 Mar 2024 17:42:19 +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 mx5.vodafonemail.de [2.207.151.53]
    SMTP error from remote mail server after RCPT
TO:<[email-masked]>:
    550 5.1.1 <[email-masked]>: Recipient address rejected:
    User unknown
  [email-masked]
    host cc-mx3.netcologne.de [89.1.8.143]
    SMTP error from remote mail server after end of data:
    552 5.2.2 <END-OF-MESSAGE>: End-of-data rejected:
    Mailbox is full - Postfach ist voll
  [email-masked]
    host emig.freenet.de [195.4.92.215]
    SMTP error from remote mail server after end of data:
    550 Spam message rejected