I need a little confirmation/advice on mitigating a DNS propagation issue. I have offices in several locations around the country, and thus far have maintained the same carrier across all sites to make sure that my people can always access our intranet even with DNS problems. We are very concerned about uptime and reliability, and so I try to keep it simple with the same carrier. After much research, I'm beginning to think I'm over thinking my DNS problem for the following reasons: 1. Verisign is pushing DNS "Rapid Updates" to/from the root DNS servers at 5 minute increments now. If there was a need to change my DNS info, any good carrier/ISP would propagate within 10-20 minutes, right? 2. Even if DNS propagation is taking 2 years to happen, if I point all of my (internal) PCs at 2 (separately located/serviced - remember redundancy!) DNS servers that I can update, won't those PCs always have the DNS information that I want them to have, correct? 3. Your solution? Cheers.

Not sure this is a good idea. It will ensure rapid propagation. However, a DNS failure will affect as early as the zone got expired. What i recommend is to have a DNS server on each site with a private copy of the zone. Intranet host will be resolved from them. That way, you can rapidely modify the zone by yourself if needed. If your offices are connected through a vpn, 2 or 3 dns server would be enough to serve all branch offices. Danny