Internet Utilities user guide

• The DNS model that the Internet Utilities set out to adhere to
• Providing proxy DNS service with the Internet Utilities
• Providing content DNS service with the Internet Utilities
• The application DNS client in the Internet Utilities
• Common DNS problems
• How to replicate a DNS database
• How to provide "split horizon" DNS service
• The standard server lookup mechanism
• The anatomy of the SMTP subsystem
• How SMTP messages are rewritten
• How NNTP messages are rewritten
• Search and substitution wildcards
• Regular expression syntax
• Logging