Email aan mezelf sturen lukt niet!

KPN blokkeert email aan mezelf, waar kan ik dit ongedaan maken ?

Vanaf een ander emaladres stuur ik een email aan mezelf op de computer thuis. Dit bericht krijg ik dan:

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:

****@kpnmail.nl:

SMTP error from remote server for TEXT command, host: mailin.kpnmail.nl (213.75.3.30) reason: 550 5.0.0

Mail rejected.


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:

*****@kpnmail.nl:
SMTP error from remote server for TEXT command, host: mailin.kpnmail.nl (213.75.3.30) reason: 550 5.0.0 Mail rejected.

--- The header of the original message is following. ---

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Received: from [77.162.51.181] ([77.162.51.181]) by web-mail.mail.com
(3c-app-mailcom-lxa08.server.lan [10.76.45.9]) (via HTTP); Sat, 9 Mar 2019
16:54:54 +0100
MIME-Version: 1.0
Message-ID:
From: "***"
To: *****@kpnmail.nl
Subject: 1111111111111111111111111111111111111111111
Content-Type: text/html; charset=UTF-8
Date: Sat, 9 Mar 2019 16:54:54 +0100
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