Howto check and isolate problems with DNS servers
and Domain records
There are two handy websites online which helps quite extensively
in tracking problems with domain name records and DNS
incosistencies.
I used them today to learn more about a problem with a
non-resolving DNS though it has already a record in a properly
configured Bind nameserver possessing a proper PTR record. Here are
three handy online DNS checkers:
1.
Squish.Net/DNSCheck -
contains Tons of useful debugging information related to the
possible problem
2.
DNSCheck.iis.se - provides
with less information, though still really handy
Some more handy information realted to DNS can be obtained via
R. Scott's DNS
Oversimplified
3.
TheDNSReport - provides
good and extensive info on problems