Mail delivery failed: returning message to sender

From: Mailer-Daemon@mc1.hosteurope.de
Domain: IP info mc1.hosteurope.de
MX-server: IP info mi001.mc1.hosteurope.de
Size: 471 Bytes
Create: 2025-01-29
Update: 2025-01-29
Score: 0
Safe: Yes

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: info@michaelbrinkmann.de (generated from info@camping-koeln.de) host mx1.pub.mailpod8-cph3.one.com [185.164.14.102] SMTP error from remote mail server after end of data: 550 5.7.1 Blocked by email filter (f3618804-de2f-11ef-9f0c-98039b0f6c32)