Help

Hi, 

We have a problem with the email platform RoundCube. Message to a certain server (@cgocable.ca) are not going through generating an error message in return to our InBound box.

We are reported to tha Abusix platform "https://app.abusix.com/lookup-and-delist?q=68.168.124.162", wich is monitering the traffic through to "@cgocable.ca". 

Why is this happening?
How do we get rid of that error.

Here is a copy of one of the many messages we received:

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:

  yvan.jalbert@cgocable.ca
    host mx3.cgocable.ca [129.158.33.68]
    SMTP error from remote mail server after initial connection:
    550 5.7.1 [C16] RBL Restriction:  See https://lookup.abusix.com/search?q=68.168.124.162
Reporting-MTA: dns; srv12.swhc.ca

Action: failed
Final-Recipient: rfc822;yvan.jalbert@cgocable.ca
Status: 5.0.0
Remote-MTA: dns; mx3.cgocable.ca
Diagnostic-Code: smtp; 550 5.7.1 [C16] RBL Restriction:  See https://lookup.abusix.com/search?q=68.168.124.162
Return-path: <info@smpm.org>
Received: from [::1] (port=45876 helo=srv12.swhc.ca)
    by srv12.swhc.ca with esmtpa (Exim 4.98.2)
    (envelope-from <info@smpm.org>)
    id 1vIXWm-0000000Dw27-3Ud4;
    Mon, 10 Nov 2025 14:26:12 -0500
MIME-Version: 1.0
Date: Mon, 10 Nov 2025 14:26:12 -0500
From: SMPM <info@smpm.org>
To: info@amimoucheur.com
Subject: =?UTF-8?Q?Salon_de_p=C3=AAche_=C3=A0_la_mouche_2025_-_Paiement_d?=
 =?UTF-8?Q?e_L=27ami_du_moucheur_-_Facture_=23_2025-013?=
User-Agent: Roundcube Webmail/1.6.11
Message-ID: <48274988b9512a56bd5a0e5864741ac6@smpm.org>
X-Sender: info@smpm.org
Organization: =?UTF-8?Q?Soci=C3=A9t=C3=A9_Mauricienne_des_p=C3=AAcheurs_?=
 =?UTF-8?Q?=C3=A0_la_mouche?=
Disposition-Notification-To: SMPM <info@smpm.org>
Content-Type: multipart/mixed;
 boundary="=_1da6ea91ba58e8f8f9e435fbc2434174"
X-Exim-DSN-Information: Due to administrative limits only headers are returned
 

Thank you in advance for your help,

Sincerely,
Denis Lamy
Trois-Rivieres, Qc