The Proxmox company, known for developing the Proxmox Virtual Environment distribution for deploying virtual server infrastructures, presented the release of the distribution Proxmox Mail Gateway 9.1, which is presented as a ready-made solution for quickly creating a system for monitoring mail traffic and protecting the internal mail server.
The installation ISO image is available for free download. Distribution-specific components open source are licensed under the AGPLv3 license. To install updates, both a paid Enterprise repository and two free repositories are available, which differ in the level of update stabilization. The system part of the distribution is based on the Debian package base. It is possible to install Proxmox Mail Gateway components on top of existing Debian-based servers.
Proxmox Mail Gateway functions as a proxy server, acting as a gateway between the external network and an internal mail server based on MS Exchange, Lotus Domino or Postfix. It is possible to manage all incoming and outgoing mail flows. All correspondence logs are parsed and available for analysis via the web interface. Both graphs are provided to assess overall dynamics, as well as various reports and forms to obtain information about specific letters and delivery status. It supports the creation of cluster configurations to ensure high availability (maintaining a synchronized backup server, data synchronized via an SSH tunnel) or load balancing.
A set of tools is provided to provide protection, filter spam, phishing and viruses. ClamAV and the Google Safe Browsing database are used to block malicious attachments, and a set of measures based on SpamAssassin is offered against spam, including support for reverse sender verification, SPF, DNSBL, gray lists, a Bayesian classification