Mail Delivery

Mail failure – rejected by local scanning code; “WPForms-Zusammernfassun”” with the following information; “You are not allowed to use the domain t-online.de as DATA From domain.” But I use the domain broecker-meckenheim.de and the E-Mail [email protected]. Where ist the wrong domain in settimg? Here the complete Message:

A message that you sent was rejected by the local scanning code that
checks incoming messages on this system. The following error was given:

  You are not allowed to use the domain t-online.de as DATA From domain.

------ This is a copy of the headers that were received before the error
       was detected.

Received: from localhost ([127.0.0.1]) by wp296.webpack.hosteurope.de running ExIM with local
	id 1p2BIb-000601-Cw; Mon, 05 Dec 2022 14:14:21 +0100
To: [email protected]
Subject: =?utf-8?Q?Deine_w=C3=B6chentliche_WPForms-Zusammenfassung_f?=
?=?utf-8?Q?=C3=BCr_www.broecker-meckenheim.de?=
X-PHP-Script: www.broecker-meckenheim.de/wp-cron.php for 80.237.133.65, 80.237.133.65
Date: Mon, 5 Dec 2022 13:14:21 +0000
From: =?utf-8?Q?Annette_Br=C3=B6cker_-_Meckenheim?= <[email protected]>
Reply-To: [email protected]
Message-ID: <GAMnvYFe5cNk0YEG1Mi8eCNpbb81NGkxWAK2FuGDHEY@www.broecker-meckenheim.de>
X-Mailer: PHPMailer 6.6.5 (https://github.com/PHPMailer/PHPMailer)
MIME-Version: 1.0
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable

The page I need help with: [log in to see the link]