Zombie SPAM blocker

Introduction:
SMF-Zombie is a reliable and lightweight Sendmail milter that filters out spam and viruses from zombie computers. It is designed to block up to 80-85% of spam and virus engines as most of the spam and viruses come from infected Windows computers worldwide.

Features:
The software provides several features to help you keep your inbox clean:

- Hosts/networks whitelist
- Scans messages less than a defined size only
- Blocks most of the spam/virus engines
- Checks the sender IP address with the most reliable zombie RBL - cbl.abuseat.org
- Safely rejects "alien" bounce messages without RFC violating
- Rejects messages for undisclosed recipients
- Rejects harmful attachments to prevent viruses from spreading
- Logs all milter activities through the syslog service.

Advantages:
SMF-Zombie is built with small code and requires only a few system resources. It works very fast and provides stable performance. It is also a production quality software.

Updates:
The latest release of the software includes several fixes and improvements:

- A workaround for the Sendmail socket unsafe error on some platforms was implemented.
- A bug with the greeting pause code under FreeBSD was fixed.
- Configuration file, default user, and working directory were changed.
- The format of log records was changed.
- Some samples of start-up scripts were added.
- New TODO tasks were added.
- Cosmetic enhancements were made.

Conclusion:
Overall, SMF-Zombie is an excellent Sendmail milter for spam and virus filtration. It provides a range of features, works fast, is stable, requires minimal system resources, and comes with regular updates.