Wednesday, November 9, 2011

DNS weirdness on Server 2008

OK, I'm not the brightest bulb in the bunch.

But, when the Microsoft Best Practices Analyzer for DNS kept telling me that a root DNS server was not responding, I was concerned.  There are only 13 of them in the world...and it's down?

It was referencing an IP address (naturally), so it was not bad DNS resolution.  Was there a routing problem?  Screwy ISP re-direction?


Seems that Microsoft installs the old IP address for the "L" root DNS server, even though the announcement was in October 2007.  The final switch off was May 2, 2008.

Funny.  I just downloaded Server 2008 with SP1, with a release date of 2/5/2011.  Seems that someone didn't take notice.

Easy fix, for those who need it:
Start > Administrative Tools > Server Manager
Roles > DNS Server > DNS
right-click on your server > Properties
Root Hints
select ""
Select the bad IP address:
Type in the good IP address:

'OK' your way back out. Re-run the BPA.

Thanks to this ICANN blog post for the hint.