Zombie SPAM blocker 1.2.1

smf-zombie is a Sendmail milter for SPAM/virus filtration from zombie computers.
Today is more than 70-80% of SPAM and viruses going from infected Windows computers around the world.
This milter aims to be lightweight, reliable and simple. Zombie SPAM blocker is written in C.
Main features:
- It has a hosts/networks whitelist;
- It can scan messages less than a defined size only;
- It can block the most of SPAM/virus engines (up to 80-85% of them);
- It can check the sender IP address with the most reliable zombie RBL - cbl.abuseat.org;
- It can safely reject "alien" bounce messages without RFC violating;
- It can reject messages for undisclosed recipients;
- It can reject harmful attachments to prevent viruses from spreading;
- It can log all milter activities through the syslog service.
Advantages:
- Small code;
- Fast work;
- Stability (production quality);
- Few system resources are required.
Enhancements:
- 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.