18
votes

Is there a free service for checking for common DNS errors on your domain? I previously used dnsstuff.com for this, but they since moved to a paid model.

2
  • Didn't realize dnsstuff.com went to a paid model. :-( May 12, 2009 at 18:41
  • 1
    Do not regret it, they were always spending spurious warnings about missing glue...
    – bortzmeyer
    May 13, 2009 at 6:40

5 Answers 5

13
votes

I use a combination of:

and

...as well as manual querying using dig, host, WHOIS, etc...

2
  • IntoDNS has no IPv6 support (and therefore produces spurious errors on IPv6-only nameservers). It sends errors when there is no "www" name in the zone which is quite stupid. It can not test TLD (it says "Invalid request!)
    – bortzmeyer
    May 13, 2009 at 6:46
  • DNSsy has no IPv6 support (and therefore produces spurious errors on IPv6-only nameservers). It sends errors when there is no "www" name in the zone which is quite stupid.
    – bortzmeyer
    May 13, 2009 at 6:48
7
votes

There are several. I recommend Zonecheck, which is also available as free software that you can install on your own machine. The greatest thing about Zonecheck is that you can edit the configuration to change the policy (changing severity of tests from warning to fatal or the opposite, not running some tests, etc).

DNScheck is nice, too, and the only tool able to check DNSSEC.

I wrote a paper listing and comparing many online tools.

1
  • Hmmm, Zonecheck stops on first error, which isn't helpful (at least, in the web interface).
    – Kzqai
    Sep 11, 2012 at 21:32
5
votes

Try this one:

http://www.squish.net/dnscheck/

1
  • As they say on the page, for experts only (it is quite low-level).
    – bortzmeyer
    May 13, 2009 at 6:56
4
votes

A couple more:

And a quick guide on how to check your DNS yourself.

2
  • howismydns.com has no IPv6 support and fail to detect the issue, so it produces spurious errors on IPv6-only nameservers. I
    – bortzmeyer
    May 13, 2009 at 6:54
  • 1
    checkdns sends a spurious (and quite stupid, IMHO) warning when you have only one MX server. It seems to indicate a lack of knowledge regarding the way email works.
    – bortzmeyer
    May 13, 2009 at 6:55
1
vote

You should definitely check out http://dnscog.com/report/serverfault.com

They give a nice detailed report and supply some recommendations too.

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