Bonjour,
Je n'arrive pas à comprendre pourquoi tout les mails pour le domaine crer.info envoyés à partir de l'adresse info@demeter-energies.fr n'arrivent pas ! alors que si il sont envoyés avec une autre boite mail cela fonctionne.
ci-aprés le message d'erreur :
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:

  denis.renoux@crer.info
    No Such User Here
Reporting-MTA: dns; mexico.o2switch.net

Action: failed
Final-Recipient: rfc822;denis.renoux@crer.info
Status: 5.0.0
Return-path: <info@demeter-energies.fr>
Received: from apoitiers-656-1-77-254.w92-156.abo.wanadoo.fr ([92.156.179.254]:56486 helo=LAPTOP6629QSGR)
    by mexico.o2switch.net with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256)
    (Exim 4.91)
    (envelope-from <info@demeter-energies.fr>)
    id 1g0OH8-0089uz-Fs
    for denis.renoux@crer.info; Thu, 13 Sep 2018 11:51:13 +0200
From: <info@demeter-energies.fr>
To: "'Denis RENOUX - CRER'" <denis.renoux@crer.info>
Subject: PERSO POUR RELECTURE
Date: Thu, 13 Sep 2018 11:50:58 +0200
Message-ID: <036301d44b47$465258b0$d2f70a10$@demeter-energies.fr>
MIME-Version: 1.0
Content-Type: multipart/mixed;
    boundary="----=_NextPart_000_0364_01D44B58.09E2F0E0"
X-Mailer: Microsoft Outlook 16.0
Content-Language: fr
Thread-Index: AdRLR0VBgV9hAshaRneSV8lSIWbbJA==
X-Exim-DSN-Information: Due to administrative limits only headers are returned

Merci de votre aide.