==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.6.7
- Deployed with iRedMail Easy or the downloadable installer? Downloadable installer
- Linux/BSD distribution name and version:  Ubuntu 22.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):  Mysql
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hello Every one, since three month, I got a serious problem, i'm not able to solve.
The mail server stop sending email nor receiving. Since then, I got more than 10k mail like the following in my postmaster mail:
(See below)
I really need your help to recover this server.

NB:
- I upgrade all component to the latest release, but still have same behavior.
- romaric@MY_DOMAINE.com was an email adress w'll created on our server. But deleted at this time to try solve the issue but nothing

Content type: Spam
Internal reference code for the message is 587817-02/pZ6v2rsHGXNT

First upstream SMTP client IP address: [172.245.244.97]
According to a 'Received:' trace, the message apparently originated at:
  [172.245.244.97], localhost unknown [172.245.244.97]

Return-Path: <romaric@MY_DOMAINE.com>
From: Nathan <romaric@MY_DOMAINE.com>
Message-ID: <8caab602f6321813309da40ffb3f048fac48a6344c@MY_DOMAINE.com>
Subject: Qu'est-ce qui vous inspire dans la vie ?
Not quarantined.

The message WILL BE relayed to:
<fggnbkjfk@outlook.fr>

Spam scanner report:
Spam detection software, running on the system "mail.MY_DOMAINE.com",
has identified this incoming email as possible spam.  The original
message has been attached to this so you can view it or label
similar future email.  If you have any questions, see
the administrator of that system for details.

Content preview:  Bonjour! Je m'appelle Domenica et vous savez, la sécurité
   dans les rencontres en ligne est sacrée pour moi. Pour prouver que je suis
   réel et sincère, je vous ai envoyé cette photo. Allons maintenant sur
  [...]

Content analysis details:   (8.2 points, 5.0 required)

pts rule name              description
---- ---------------------- --------------------------------------------------
1.9 URIBL_ABUSE_SURBL      Contains an URL listed in the ABUSE SURBL
                            blocklist
                            [URIs: hothottiers.com]
2.5 URIBL_DBL_SPAM         Contains a spam URL listed in the Spamhaus DBL
                            blocklist
                            [URIs: hothottiers.com]
-1.0 ALL_TRUSTED            Passed through trusted hosts only via SMTP
1.2 MISSING_HEADERS        Missing To: header
0.0 HTML_IMAGE_RATIO_04    BODY: HTML has a low ratio of text to image
                            area
0.0 HTML_MESSAGE           BODY: HTML included in message
1.6 HTML_IMAGE_ONLY_12     BODY: HTML: images with 800-1200 bytes of
                            words
1.9 REPLYTO_WITHOUT_TO_CC  No description available.
-0.0 T_SCC_BODY_TEXT_LINE   No description available.
0.0 T_REMOTE_IMAGE         Message contains an external image
Return-Path: <romaric@MY_DOMAINE.com>
Received: from localhost (unknown [172.245.244.97])
    by mail.MY_DOMAINE.com (Postfix) with ESMTPSA id 4SRqzg28grzKttK;
    Fri, 10 Nov 2023 20:24:14 +0000 (UTC)
Message-ID: <8caab602f6321813309da40ffb3f048fac48a6344c@MY_DOMAINE.com>
Reply-To: Nathan <romaric@MY_DOMAINE.com>
From: Nathan <romaric@MY_DOMAINE.com>
Subject: Qu'est-ce qui vous inspire dans la vie ?
Date: Fri, 10 Nov 2023 21:25:32 +0100
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="ab0148e317d3fe85a60c45ff8b4f2b9a1c80"