DNS (Domain Name System) and mail server configuration checking is extremely vital for a domain.You need to make sure that all DNS status are green marked and active.I had trouble regarding launching my site.I published my homepage but the I saw a blank page.I tried to configure all possible DNS setting and name server but I couldn’t solve it.I am hosting with Hostgator,therefore, I went for of their online chat support.
I explained all issues and name server setting which I did from my side.The chat person tried to resolve my problem.They use smart tool for verifying the DNS error and mail server setting.He informed me that the name server I am using was incorrect as they have changed recently their server.Well,I got the solution in a minute and learn about their checking process.
What do they use ?
I thought that they manually checked my site.I was wrong,my site was checked at IntoDNS.I found all the major reports regarding DNS and mail server setting.From now you don’t need assistance for checking any misconfiguration.You can do it following simple steps :
- Visit IntoDNS
- Enter domain name without HTTP:// (i.e – latestweb4.com)
- Click on Report button.
I checked my site and found no error.let me share the status I received :
|Category||Status||Test name||Information send feedback|
|Parent||Domain NS records||Nameserver records returned by the parent servers are:
b.gtld-servers.net was kind enough to give us that information.
|TLD Parent Check||Good. b.gtld-servers.net, the parent server I interrogated, has information for your TLD. This is a good thing as there are some other domain extensions like “co.us” for example that are missing a direct check.|
|Your nameservers are listed||Good. The parent server b.gtld-servers.net has your nameservers listed. This is a must if you want to be found as anyone that does not know your DNS servers will first ask the parent nameservers.|
|DNS Parent sent Glue||Good. The parent nameserver sent GLUE, meaning he sent your nameservers as well as the IPs of your nameservers. Glue records are A records that are associated with NS records to
provide “bootstrapping” information to the nameserver.(see RFC 1912 section 2.3)
|Nameservers A records||Good. Every nameserver listed has A records. This is a must if you want to be found.|
|NS||NS records from your nameservers||NS records got from your nameservers listed at the parent NS are:
|Recursive Queries||Good. Your nameservers (the ones reported by the parent server) do not report that they allow recursive queries for anyone.|
|Same Glue||The A records (the GLUE) got from the parent zone check are the same as the ones got from your nameservers. You have to make sure your parent server has the same NS records for your zone as you do according to the RFC. This tests only nameservers that are common at the parent and at your nameservers. If there are any missing or stealth nameservers you should see them below!|
|Glue for NS records||INFO: GLUE was not sent when I asked your nameservers for your NS records.This is ok but you should know that in this case an extra A record lookup is required in order to get the IPs of your NS records. The nameservers without glue are:
|Mismatched NS records||OK. The NS records at all your nameservers are identical.|
|DNS servers responded||Good. All nameservers listed at the parent server responded.|
|Name of nameservers are valid||OK. All of the NS records that your nameservers report seem valid.|
|Multiple Nameservers||Good. You have multiple nameservers. According to RFC2182 section 5 you must have at least 3 nameservers, and no more than 7. Having 2 nameservers is also ok by me.|
|Nameservers are lame||OK. All the nameservers listed at the parent servers answer authoritatively for your domain.|
|Missing nameservers reported by parent||OK. All NS records are the same at the parent and at your nameservers.|
|Missing nameservers reported by your nameservers||OK. All nameservers returned by the parent server b.gtld-servers.net are the same as the ones reported by your nameservers.|
|Domain CNAMEs||OK. RFC1912 2.4 and RFC2181 10.3 state that there should be no CNAMEs if an NS (or any other) record is present.|
|NSs CNAME check||OK. RFC1912 2.4 and RFC2181 10.3 state that there should be no CNAMEs if an NS (or any other) record is present.|
|Different subnets||WARNING: Not all of your nameservers are in different subnets|
|IPs of nameservers are public||Ok. Looks like the IP addresses of your nameservers are public. This is a good thing because it will prevent DNS delays and other problems like|
|DNS servers allow TCP connection||OK. Seems all your DNS servers allow TCP connections. This is a good thing and useful even if UDP connections are used by default.|
|Different autonomous systems||WARNING: Single point of failure|
|Stealth NS records sent||Ok. No stealth ns records are sent|
|SOA||SOA record||The SOA record is:
Primary nameserver: ns1.md-in-30.webhostbox.net
Hostmaster E-mail address: cpanel.webhostbox.net
Serial #: 2015081800
Expire: 3600000 5 weeks
Default TTL: 86400
|NSs have same SOA serial||OK. All your nameservers agree that your SOA serial number is 2015081800.|
|SOA MNAME entry||OK. ns1.md-in-30.webhostbox.net That server is listed at the parent servers.|
|SOA Serial||Your SOA serial number is: 2015081800.
This appears to be in the recommended format of YYYYMMDDnn.
|SOA REFRESH||OK. Your SOA REFRESH interval is: 86400. That is OK|
|SOA RETRY||Your SOA RETRY value is: 7200. Looks ok|
|SOA EXPIRE||Your SOA EXPIRE number is: 3600000. That is NOT OK|
|SOA MINIMUM TTL||Your SOA MINIMUM TTL is: 86400. This value was used to serve as a default TTL for records without a given TTL value and now is used for negative caching (indicates how long a resolver may
cache the negative answer). RFC2308 recommends a value of 1-3 hours. Your value of 86400 is OK.
|MX||MX Records||Your MX records that were reported by your nameservers are:
0 latestweb4.com126.96.36.199[These are all the MX records that I found. If there are some non common MX records at your nameservers you should see them below. ]
|Different MX records at nameservers||Good. Looks like all your nameservers have the same set of MX records. This tests to see if there are
any MX records not reported by all your nameservers and also MX records that have the same hostname but different IPs
|MX name validity||Good. I did not detect any invalid hostnames for your MX records.|
|MX IPs are public||OK. All of your MX records appear to use public IPs.|
|MX CNAME Check||OK. No problems here.|
|MX A request returns CNAME||OK. No CNAMEs returned for A records lookups.|
|MX is not IP||OK. All of your MX records are host names.|
|Number of MX records||OK. Looks like you only have one MX record at your nameservers. You should be careful about what you are doing since you have a single point of failure that can lead to mail being lost if the server is down for a long time.|
|Mismatched MX A||OK. I did not detect differing IPs for your MX records.|
|Duplicate MX A records||OK. I have not found duplicate IP(s) for your MX records. This is a good thing.|
|Reverse MX A records (PTR)||Your reverse (PTR) record:
188.8.131.52.in-addr.arpa -> md-in-30.webhostbox.net
You have reverse (PTR) records for all your IPs, that is a good thing.
|WWW||WWW A Record||Your www.latestweb4.com A record is:www.latestweb4.com ->
[Looks like you have CNAME’s]
|IPs are public||OK. All of your WWW IPs appear to be public IPs.|
|WWW CNAME||OK. You do have a CNAME record for www.latestweb4.com.Your CNAME entry also returns the A record for the CNAME entry, which is good.|
If you see any error with a red alert that means you need to re-configure.Correct the setting and again recheck with intoDNS.