Proxmox Server Solutions GmbH has announced the release of Proxmox Mail Gateway 8.2, the latest version of its open-source email security solution. This platform, based on Debian 12.9 “Bookworm”, introduces new authentication features, enhancements to email filtering, and automated installation options, establishing itself as a key tool for protection against spam, viruses, trojans, and phishing attacks.
What’s New in Proxmox Mail Gateway 8.2
1. Single Sign-On (SSO) Authentication
The new version simplifies access management by incorporating support for multiple authentication systems in the backend. Administrators can now log in to Proxmox Mail Gateway using SSO through protocols like OpenID Connect, allowing integration with public and private services, including Keycloak, Zitadel, and LemonLDAP::NG.
2. Enhanced Rule System
The email filtering system has received several optimizations:
- More precise attachment filtering, thanks to signature-based file detection rather than relying on file names or Content-Type fields.
- More specific email header filtering, with the option to exclude headers in attached emails, improving the precision of email traffic control.
3. DKIM Signing for System-Generated Emails
Administrators can now define the From header in emails generated by Proxmox Mail Gateway, such as system notifications, administrative reports, or backup alerts. These emails are now signed with DKIM, provided the corresponding domain is configured in the installation.
4. Automated Installation for Large Deployments
To facilitate deployment in large-scale infrastructures, Proxmox Mail Gateway 8.2 introduces support for automated and unattended installations. The “proxmox-auto-install-assistant” tool allows system configuration without manual intervention, reducing deployment time and minimizing errors.
- The process is managed through a predefined configuration file, which can be supplied via the installation ISO, a USB drive, or over the network.
- Ability to run custom scripts on the first boot for configurations tailored to specific needs.
Availability and Enterprise Subscriptions
Proxmox Mail Gateway 8.2 is distributed under the GNU Affero GPL v3 license and can be downloaded in ISO format, allowing installation on physical servers or virtual machines. It is also possible to run it as a container within Proxmox VE.
For enterprise environments, Proxmox Server Solutions offers subscriptions that provide access to the Enterprise Repository, with regular updates and specialized technical support.
- The basic plan starts at 180 euros per year per host, with no limit on users or domains.
Conclusion
With this release, Proxmox strengthens its position as one of the most advanced and accessible email security solutions. The new authentication features, improved filtering, and installation automation make Proxmox Mail Gateway 8.2 an even more robust choice for protecting the email infrastructure in businesses and organizations.