As they did a few years ago, Roadrunner is changing their DNS numbers without telling anyone. Please alert your users of the following from the RR network status page:
[...]You'd probably do better to direct them to an authoritative page with this information on it. You don't want to be pointing your machine to rogue DNS servers on the say-so of some email you received from a third party.
Therein lies phishing.
-Jeff Mings
Tim Newsham http://www.lava.net/~newsham/