Date: Tue, 16 Sep 2026 10:00:00 +0200
From: postmaster@alter-server.example
To: bounce@pressekonto.com
Subject: Mail delivery failed: returning message to sender
Message-ID: <free-1@alter-server.example>
Content-Type: text/plain; charset=utf-8

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. The following address(es) failed:

  jemand@alter-server.example
    Unrouteable address