The date, time, machine that generated the message, and ident string from the openlog call are prepended to it in the log file. Page 256 Subnet numbers consisting of all zeros or all ones are officially frowned upon, but they are sometimes used in practice. Page 289 Bill Metcalfe should be Bob Metcalfe. Page 312 Near the bottom of the page, the FTP site for Scott Bradner's lab should be ndtl.harvard.edu. A 'zone' is a domain minus all nodes that have been delegated to subdomains.
Name servers deal with zones, but 'domain' is often used where 'zone' is meant.
For example, the record IN MX 10 mailhub.cs.colorado.edu. immediately following the SOA and NS records for the cs zone would achieve the desired effect. In the fourth paragraph, third line from the bottom, the -d is wrong. See the corrections on page 405 for the description of the fix. According to the man page for ypserv , support for DNS is provided by ypserv -d . But in reality, -d turns on debugging.