Checking DNS records is something that we sometimes have to do. Recently, when moving over to Google Apps for Your Domain, we had quite a few problems with email being delivered (apparently selectively) to our old mail servers, instead of to GMail. Enter IntoDNS.com, a fantastic resource – and free.
The ins and outs of DNS can sometimes get very complicated but this clever web site explains everything to you as it finds problems. Within seconds, IntoDNS.com had trawled through our DNS records and picked out the problem, and had suggested several ways to fix it, too.
Bravo. What a truly fantastic resource!