I run a DNS server Linux using BIND 9.1.1. It acts as a caching DNS server from the Internet, but it is the primary nameserver for our company domain. I want to set up DNS entries for login.oscar.aol.com and the login server for yahoo chat and ircchat that will resolve to bogus IP addresses. By doing so, I hope to thwart the continued use of chat inside the company network by causing these applications to fail to initialize because of the inability to reach the login servers. My question is, how do I set up these bogus DNS entries, when I don’t own the domains in question. Also, I want to be able to do this without affecting the other valid destinations from the domains in question. In other words, I want to give false DNS lookups for the yahoo chat server, but not its mail server or web site or any other valid destination that might be part of the yahoo domain.
