If you need to clear your dns cache on your Mac OS x 10.5 or greater, just issue the command via terminal:

click applications > utilities > terminal

issue the command:

dscacheutil -flushcache



Then, ping the domain name you are trying to test to see if you get the update.

ping m3server.com

(use your domain name in the above example that your testing)

- cheers!

Keywords: Clear, Cache, DNS