Clam AntiVirus is an anti-virus software for UNIX operating systems. The main purpose of this software is the integration with mail servers and attachment scanning. The package provides a flexible and scalable multi-threaded daemon, a command line scanner, and a tool for automatic updating via Internet. The package presently features detection of over 28,000 viruses, worms and trojans. Its virus database is updated every hour. By running this software, your Web host is scanning your e-mail for viruses before you download it from them.