Upcoming: Asterisk: The future of telephony by Madson, Smith, Meggelen
Upcoming: Switching to VoIP by Theodore Wallingford
Comparing Nagios related books: which book to choose ?
Pro Nagios 2.0 (Expert's Voice in Open Source) by James Turnbull
Nagios: System and Network Monitoring by Wolfgang Barth
Linux(R) Troubleshooting for System Administrators and Power Users by James Kirkland
The Book of Postfix: State-of-the-Art Message Transport by Ralf Hildebrandt, Patrick Koetter
Optimizing Linux(R) Performance: A Hands-On Guide to Linux(R) Performance Tools by Phillip G. Ezolt
Data Recovery Tips & Solutions: Windows, Linux, and BSD by Kris Kaspersky
Self-Service Linux(R): Mastering the Art of Problem Determination by Mark Wilding, Dan Behman
Ending Spam: Bayesian Content Filtering and the Art of Statistical Language Classification by Jonathan A Zdziarski

Book authors whitelist