
Filters spam emails at SMTP level using various advanced techniques.
System Requirements:
- OS: Windows, Linux, or macOS (Perl required)
- RAM: 1 GB minimum
- Disk Space: 100 MB
- Dependencies: Perl interpreter and modules
Developer: John VanDyk (ASSP project founder)

Anti-Spam SMTP Proxy Server
- License: Free
- Version: Latest Update
- Security:
Safe to Download
Anti-Spam SMTP Proxy Server (ASSP) is an open-source email filtering tool designed to reduce spam and phishing emails at the SMTP level. It works as a transparent proxy, examining inbound and outbound mail traffic before it reaches the mail server.
Main Functions
- Real-time spam filtering using Bayesian algorithms.
- Greylisting, DNSBL, SPF, and virus scanning.
- Web-based configuration interface.
- Logging, quarantine, and reporting features.
- Support for POP3 and SMTP relays.
User Benefits
- Reduced email spam through advanced filtering techniques.
- Secure email communication with virus and phishing detection.
- Cost-effective solution for businesses and ISPs.
- Easy to configure with browser-based UI.
- Improved email server performance by reducing junk load.