Jan-Piet Mens, who I’ve met at various UKUUG events, has just released his Alternative DNS servers book as a PDF, available for free from his website. It’s well worth a read if you want to do something with DNS other than running a BIND server with zones stored in plain text files—e.g. storing DNS data in an SQL database or LDAP directory instead.
Of course, a hard copy version is still available for those of you who, like me, still prefer to read things printed on dead trees.
Thanks, Paul.