Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!ucsd!mvb.saic.com!mark.berryman From: Mark.Berryman@Mvb.Saic.Com (MUMPS Wizard) Newsgroups: comp.protocols.tcp-ip.domains Subject: Re: Subnets and IN-ADDR.ARPA Message-ID: <2391727@MVB.SAIC.COM> Date: 13 Apr 91 21:56:15 GMT References: Organization: Science Applications Int'l, Corp. - Computer systems operation Lines: 12 We solved this particular problem by having a program that periodically polls appropriate domain servers within the company for all of their type A records and builds the master file for the reverse address pointers. This data is then served to the outside world by the primary servers and internally by any server that wishes to set itself up as a secondary for it. There are, of course, enough filters so that only type A's that are within one of the company networks are used and the master file is only updated if something changes. Mark Berryman Mark.Berryman@Mvb.Saic.Com