Email cron not working on Passbolt docker

Checklist
[X ] I have read intro post: https://community.passbolt.com/t/about-the-installation-issues-category/12
[ X] I have read the tutorials, help and searched for similar issues
[ X] I provide relevant information about my server (component names and versions, etc.)
[ X] I provide a copy of my logs and healthcheck
[ X] I describe the steps I have taken to trouble shoot the problem
[ X] I describe the steps on how to reproduce the issue

Hello everybody,
I have been emails fully working until a few days ago. For some reason it suddenly stopped sending emails. After digging found that the emails are actually been stored in the queue and if I forcefully run the cron task to send them then it does work. For some reason env variables XXXX are being deleted after some time.

So if I run this:

root@dc551a9ca984:/usr/share/php/passbolt# PASSBOLT_BASE_DIR=/usr/share/php/passbolt
PASSBOLT_LOG_DIR=/var/log/passbolt
root@dc551a9ca984:/usr/share/php/passbolt# su -s /bin/bash -c ". /etc/environment && $PASSBOLT_BASE_DIR/bin/cron" www-data
Email 8690 was sent

Emails are sent.

I 've tried setting up a cron to the root user . The service is up and running and still not working:

root@dc551a9ca984:/usr/share/php/passbolt# service cron status
cron is running.
root@dc551a9ca984:/usr/share/php/passbolt# crontab -l

PATH=/bin:/usr/local/bin:/usr/bin
PASSBOLT_BASE_DIR=/usr/share/php/passbolt
PASSBOLT_LOG_DIR=/var/log/passbolt

* * * * * su -s /bin/bash -c ". /etc/environment && $PASSBOLT_BASE_DIR/bin/cron" www-data >/var/log/passbolt_email.log 2>&1

root@dc551a9ca984:/usr/share/php/passbolt#

Any idea how to fix this?
Thanks in advance.

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 Open source password manager for teams
-------------------------------------------------------------------------------
 Healthcheck shell
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 Environment

 [PASS] PHP version 7.4.33.
 [PASS] PCRE compiled with unicode support.
 [PASS] The temporary directory and its content are writable and not executable.
 [PASS] The logs directory and its content are writable.
 [PASS] GD or Imagick extension is installed.
 [PASS] Intl extension is installed.
 [PASS] Mbstring extension is installed.

 Config files

 [PASS] The application config file is present
 [WARN] The passbolt config file is missing in /etc/passbolt/
 [HELP] Copy /etc/passbolt/passbolt.default.php to /etc/passbolt/passbolt.php
 [HELP] The passbolt config file is not required if passbolt is configured with environment variables

 Core config

 [PASS] Debug mode is off.
 [PASS] Cache is working.
 [PASS] Unique value set for security.salt
 [PASS] Full base url is set to https://sepdevsv02.sepalo.es:443
 [PASS] App.fullBaseUrl validation OK.
 [PASS] /healthcheck/status is reachable.

 SSL Certificate

 [FAIL] SSL peer certificate does not validate
 [FAIL] Hostname does not match when validating certificates.
 [WARN] Using a self-signed certificate
 [HELP] Check https://help.passbolt.com/faq/hosting/troubleshoot-ssl
 [HELP] cURL Error (60) SSL certificate problem: unable to get local issuer certificate

 Database

 [PASS] The application is able to connect to the database
 [PASS] 30 tables found
 [PASS] Some default content is present
 [PASS] The database schema up to date.

 GPG Configuration

 [PASS] PHP GPG Module is installed and loaded.
 [PASS] The environment variable GNUPGHOME is set to /var/lib/passbolt/.gnupg.
 [PASS] The directory /var/lib/passbolt/.gnupg containing the keyring is writable by the webserver user.
 [PASS] The server OpenPGP key is not the default one
 [PASS] The public key file is defined in /etc/passbolt/passbolt.php and readable.
 [PASS] The private key file is defined in /etc/passbolt/passbolt.php and readable.
 [PASS] The server key fingerprint matches the one defined in /etc/passbolt/passbolt.php.
 [PASS] The server public key defined in the /etc/passbolt/passbolt.php (or environment variables) is in the keyring.
 [PASS] There is a valid email id defined for the server key.
 [PASS] The public key can be used to encrypt a message.
 [PASS] The private key can be used to sign a message.
 [PASS] The public and private keys can be used to encrypt and sign a message.
 [PASS] The private key can be used to decrypt a message.
 [PASS] The private key can be used to decrypt and verify a message.
 [PASS] The public key can be used to verify a signature.
 [PASS] The server public key format is Gopengpg compatible.
 [PASS] The server private key format is Gopengpg compatible.

 Application configuration

 [FAIL] This installation is not up to date. Currently using 3.12.2 and it should be v4.10.1.
 [HELP] See. https://www.passbolt.com/help/tech/update
 [PASS] Passbolt is configured to force SSL use.
 [PASS] App.fullBaseUrl is set to HTTPS.
 [PASS] Selenium API endpoints are disabled.
 [PASS] Search engine robots are told not to index content.
 [INFO] The Self Registration plugin is enabled.
 [INFO] Registration is closed, only administrators can add users.
 [PASS] The deprecated self registration public setting was not found in /etc/passbolt/passbolt.php.
 [WARN] Host availability checking is disabled.
 [HELP] Make sure this instance is not publicly available on the internet.
 [HELP] Or set the PASSBOLT_EMAIL_VALIDATE_MX environment variable to true.
 [HELP] Or set passbolt.email.validate.mx to true in /etc/passbolt/passbolt.php.
 [PASS] Serving the compiled version of the javascript app.
 [WARN] Some email notifications are disabled by the administrator.

 JWT Authentication

 [PASS] The JWT Authentication plugin is enabled
 [PASS] The /etc/passbolt/jwt/ directory is not writable.
 [PASS] A valid JWT key pair was found

 SMTP Settings

 [PASS] The SMTP Settings plugin is enabled.
 [PASS] SMTP Settings coherent. You may send a test email to validate them.
 [PASS] The SMTP Settings source is: database.
 [WARN] The SMTP Settings plugin endpoints are enabled.
 [HELP] It is recommended to disable the plugin endpoints.
 [HELP] Set the PASSBOLT_SECURITY_SMTP_SETTINGS_ENDPOINTS_DISABLED environment variable to true.
 [HELP] Or set passbolt.security.smtpSettings.endpointsDisabled to true in /etc/passbolt/passbolt.php.

 [FAIL] 3 error(s) found. Hang in there!