POP3 Virus Scanner Proxy

POP3 Virus Scanner Proxy is a handy tool that acts as a transparent proxy daemon. Its job is to scan all your emails for viruses using third-party scanners, and it supports AVPD and Trophie right out of the box!

How It Works

To get started, you need to set up port redirection in your Linux netfilter (iptables). This setup ensures that all connections from your office to any POP3 server outside won't leave your router. Instead, they will come to a local port where POP3VScan listens. It then receives the original destinations of packets from the Linux kernel (that’s the POP3 server out there) and connects to them.

Email Scanning Process

When data comes in from clients, it gets sent to the server, and back again. There’s just one little tweak: we parse the necessary parts of the POP3 protocol. So when an email arrives from the server, we save it into a file, run a virus scanner on it, and if it's clean, we send it through. If not? We replace it with a virus notification instead!

Compatibility with Scanners

You can use all scanners by setting scannertype=basic. Plus, POP3VScan offers scannertype=avpd, which allows for high-speed scanning with 'Kaspersky Anti-Virus for Linux'. If you're familiar with C programming, you can easily adapt other scan daemons like Trophie or Sophie.

No Configuration Needed!

The best part? Neither the client nor the server needs any configuration! They won’t even notice there’s a mail scanner in action—except for when clients receive virus notifications or check their headers. The server will only see our IP as the source.

Download POP3 Virus Scanner Proxy Now!