Clearing your DNS cache is a trick you need to know, especially because OSX has a slightly annoying habit of caching negative results. That is, if for some reason you get a “not known” result back from a DNS server, OSX will hold onto it for some time, unless you clear the cache.

Irritatingly the way to do this has changed between OSX 10.4 and 10.5. In OSX 10.4 Tiger, you type in a terminal window:

lookupd -flushcache

Whereas in OSX 10.5 Leopard the command is now:

dscacheutil -flushcache

Posted: December 31st, 2007 under Tips.
Comments: none

Welcome to the corpmac.co.uk blog. We’re a Mac-focussed IT consultancy that’s developing out of an established PC-based consultancy. You can find the corporate blurb over to the right behind the “about” button.In this blog we intend to write about hints and tips as we find them (for our own notes as well as others!), plus longer pieces as inspiration strikes. We’ll also link to other articles we find particularly useful or informative.

Posted: December 28th, 2007 under Company.
Comments: none