Three separate e-mail server packages are discussed: sendmail, qmail, and Postfix. Each security topic provides hands-on examples using each of the three e-mail packages. The book primarily focuses on providing instructions for Internet Service Providers (ISPs) and small corporate network administrators for configuring Open Source e-mail packages to provide secure e-mail services to customers. Additional information educates the reader on basic e-mail principles and protocols. Some key topics that are discussed include:* @Bullet 1 = Spam blocking* @Bullet 2 =Virus filtering* @Bullet3 = Firewall configurations* @Bullet4 = Relay blocking

About the Author

Rich Blum has worked for the past 13 years as a network and systems administrator for the U.S. Department of Defense at the Defense Finance and Accounting Service. There he has been using Unix operating systems as an FTP server, TFTP server, e-mail server, mail list server, and network monitoring device in a large networking environment. Rich currently serves on the board of directors for Traders Point Christian Schools and is active on the computer support team at the school, helping to support a Microsoft network in the classrooms and computer lab of a small K-8 school. Rich has a bachelors of science degree in electrical engineering, and a masters of science degree in management, specializing in Management Information Systems, both from Purdue University. When Rich is not being a computer nerd, he is either playing electric bass for the church worship band or spending time with his wife, Barbara, and two daughters, Katie Jane and Jessica.