Proxmox Mail Gateway 9.0 released!

[t.lamprecht]

We are pleased to announce the first stable release of Proxmox Mail Gateway 9.0 - immediately available for download!

Twenty years after its first release, the new version of our email security solution is based on Debian 13.1 "Trixie", but defaulting to the newer Linux kernel 6.14.11-2. The latest versions of ZFS 2.3.4, PostgreSQL 17, SpamAssassin 4.0.2 (with updated rulesets), and ClamAV 1.4.3 are included.

Some highlights of Proxmox Mail Gateway 9.0

• New Quarantine UI on mobile browsers based on the modern Rust-based Yew framework.
• Significantly improved Single-Sign-On (SSO) with OpenID Connect and multiple authentication realms for PMG, based on the feedback from our customers and community.
• Synchronize the configuration templates of the core service postfix with the latest recommendations from upstream.
• Adapt the Content-Type filters to the renaming of relevant MIME-types for Microsoft executable formats.

Beyond these major additions, we've also implemented numerous performance enhancements and bug fixes to make your experience even smoother. For a full list of changes, check out our release notes.

Release notes
https://pmg.proxmox.com/wiki/index.php/Roadmap

Press release
https://www.proxmox.com/en/news/press-releases/

Download
https://www.proxmox.com/en/downloads
Alternate ISO download:
https://enterprise.proxmox.com/iso

Documentation
https://pmg.proxmox.com/pmg-docs

Community Forum
https://forum.proxmox.com

Bugtracker
https://bugzilla.proxmox.com

Source code
https://git.proxmox.com

Thank you for supporting the Proxmox Mail Gateway project! Your contributions and feedback, tests, bug reports and code contributions are always welcome!

FAQ
Q: Can I upgrade the latest Proxmox Mail Gateway 8 to 9 with apt?
A: Yes, please follow the upgrade instructions on https://pmg.proxmox.com/wiki/index.php/Upgrade_from_8_to_9

Q: Can I upgrade a 9.0 beta installation to the stable 9.0 via apt?
A: Yes, upgrading from beta to stable installation is possible via apt. We recommend switching to the pmg-enterprise repository on upgrade for the most stable experience.

Q: How long will Proxmox Mail Gateway 8.2 receive bug fixes and security support?
A: Proxmox Mail Gateway 8.2 will receive security updates and critical bug fixes until August 2026. This support window provides an overlap of approximately one year after the release of Proxmox Mail Gateway 9.0, giving users ample time to plan their upgrade to the new major version. For more information on the support lifecycle of Proxmox Mail Gateway releases, please visit:
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#_frequently_asked_questions

Q: Can I install Proxmox Mail Gateway on top of Debian Trixie?
A: Yes, see https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#pmg_install_on_debian

Q: Can I install Proxmox Mail Gateway as a virtual machine on Proxmox Virtual Environment, VMware, or Hyper-V ?
A: Yes, just do the ISO install. If you install on Hyper-V as a generation 2 virtual machine, configure secure boot to use "Microsoft UEFI Certificate Authority".

Q: Can I install Proxmox Mail Gateway as LXC container on Proxmox Virtual Environment?
A: Yes. You can install it on top of a Debian container or just download the template via the integrated template downloader.

Q: Where can I get more information about feature updates?
A: Check the roadmap, forum, the mailing list, and/or subscribe to our newsletter.