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rapunzal
07-06-2011, 05:53 AM
What does a "reverse DNS request" mean? And what does it do on a VPS server?
help with honest.

noblenik
08-01-2011, 06:02 AM
This site does a reverse DNS lookup of an IP address by searching domain name registry and registrar tables. IP addresses are four numbers in the range of 0 to 255 separated by periods.

hostimizer
09-08-2011, 11:59 PM
thats give your server more available in globule to resolve dns

max server provider use google public dns

8.8.8.8
8.8.8.4

basicnet
09-22-2011, 12:44 PM
Not sure I understand the question the way it was meant: but please note that you (as data center, as IP net owner) can also set a rDNS (reverse DNS) entry for IPs -- usually done to the HOSTNAME of servers for the main IP or in case of domain hosting accounts with a dedicated IP done for that domain.

This is a tool to show what is set up there:
http://relays.osirusoft.com/cgi-bin/rdns.cgi

Best,
Martin

pavankumar
11-09-2011, 07:11 AM
hi.
According to me Reserve DNS is the determination of the domain name which is associated with given ip address.

vServer Center
12-01-2011, 06:36 AM
reverse DNS mapped an IP back to a hostname.
It is important that you setup reverse DNS for your VPS IP. Otherwise, you will see a lot mail bounces due to incorrect reverse DNS.

poul111
12-01-2011, 11:40 PM
According to me Arrange DNS is the resolve of the website which is associated with given ip deal with.

oswaldonolan
12-07-2011, 03:52 AM
The Reverse-DNS is a naming convention for the components, packages, and types used by a programming language, system or framework.



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TeamHC
12-15-2011, 05:25 AM
reverse DNS mapped an IP back to a hostname.
It is important that you setup reverse DNS for your VPS IP. Otherwise, you will see a lot mail bounces due to incorrect reverse DNS.

This is the correct answer for you in a simple manner. DNS helps you to point back to ip thus giving a better identity. If you set RDNS you can avoid other mail servers rejecting the mails and also can avoid getting blocked in blaclikst because of this single reason.

jerrypatel
03-23-2012, 07:51 AM
RDNS pretty much is a method to determine a hostname with it's associated IP. Some 'free email' providers like AOL, Hotmail sometimes rejects mail from a server if it doesn't have a RDNS Entry.
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pavankumar
03-27-2012, 08:38 AM
hi..

i tell you Revers DNS The Reverse-DNS is a naming convention for the components, packages, and types used by a programming language, system or framework.

johndouglas007
04-10-2012, 11:54 AM
Thank's to spend your time to share. This is what I (and others, I believe), really need. It's really very informative post. Please keep it up. Looking for more relevant post.

smith29
06-27-2012, 08:56 AM
Excellent Posting!!! Keep it up.

ankita123
08-22-2012, 08:01 AM
it is very helpful posting for all people.

thewebhostingdi
08-23-2012, 10:34 AM
Reverse DNS is IP address to domain name mapping - the opposite of normal DNS which maps domain names to IP addresses.

Computer networks use the Domain Name System to determine the IP address associated with a domain name. This process is also known as forward DNS resolution. Reverse DNS is the inverse process, the resolution of an IP address to its designated domain name.

The use of the rDNS: network troubleshooting via tools such as traceroute, ping, and the "Received" trace header field for SMTP e-mail, web sites tracking users etc.

fotosf
09-02-2012, 02:50 AM
DNS is known as Domain Name System. Primary work of DNS is to resolve the host name to IP address.
DNS converts the machine names to IP addresses such as 199.249.150.9. Basically, it translates from a name to an address and from an address to a name.

jamsen
09-28-2012, 06:25 AM
Reverse DNS (rDNS) is a method of resolving an IP address into a domain name, just as the domain name system (DNS) resolves domain names into associated IP addresses. One of the applications of reverse DNS is as a spam filter. Here's how it works: Typically, a spammer uses an invalid IP address, one that doesn't match the domain name. A reverse DNS lookup program inputs IP addresses of incoming messages to a DNS database. If no valid name is found to match the IP address, the server blocks that message.

Adsystems
12-24-2012, 04:46 AM
This site does a reverse DNS lookup of an IP address by searching domain name registry and registrar tables. IP addresses are four numbers in the range of 0 to 255 separated by periods.

yes you are right i agreed .

partapamit
01-10-2013, 07:21 AM
Not yet cleared about it , still confused , i think better i google for this.

bob225
01-24-2013, 01:38 PM
There are tons of dns providers out there. Most guys I know use Google's - 8.8.8.8

tomm121
02-27-2013, 07:52 AM
Hello All,

Why would you need a Reverse DNS set up for your DNS server? While it is not as necessary to have a Reverse DNS configured for your domain name as it is to configure a Forward DNS, you will get a better guarantee that everything is working hassle free online with a Reverse DNS set up for your host.

egihosting
11-26-2013, 08:19 AM
Reverse DNS (RDNS) determines what hostname is associated with an IP address. RDNS record is updated on the name servers of the service provider. The provider can either setup PTR records for you (or) incase you have your own name servers they delegate the entire IP block to your name servers.

StuartSpindlow
11-25-2014, 03:18 AM
RDNS is a good method to determine a hostname.

frankmyspy
12-12-2014, 06:38 AM
I completely agree with all of you guys, this is really great stuff for me.

divorceclass
12-18-2014, 01:11 AM
Sorry guys, I don't have any idea about this topic but good to know about your views.

novaco112
12-19-2014, 05:47 AM
This site performs a reverse DNS lookup of an IP address by searching domain name registry and registrar tables. IP addresses are four numbers in the range of 0 to 255 separated by periods.

kaufenpreis
12-23-2015, 05:45 AM
In other uses, reverse DNS can be used to determine the real upstream of a reseller as well, thus many providers block reverse dns lookups for their resellers.

sigmatestcenter
01-02-2016, 06:27 AM
Reverse DNS is IP address to domain name mapping - the opposite of forward (normal) DNS which maps domain names to IP addresses.

Reverse DNS is separate from forward DNS.
Forward DNS for "abc.com" pointing to IP address "1.2.3.4", does not necessarily mean that reverse DNS for IP "1.2.3.4" also points to "abc.com".

aaronbrad
01-06-2016, 01:15 AM
Now a days one of the main purpose of having reverse RDS is spam filtering

ColockerDC
01-11-2016, 01:38 PM
In case you didn't know, rDNS is implemented by having a zone made up from the IP backwards at the domain 'in-addr.arpa'.

So for example if your IP was 10.1.2.3 (which it wouldn't be because that is a private IP range) the zone would be:

3.2.1.10.in-addr.arpa

DAC
01-22-2016, 01:09 PM
Reverse DNS (rDNS) is IP address to domain name mapping - the opposite of forward (normal) DNS which maps domain names to IP addresses. One of the applications of reverse DNS is as a spam filter. It is mostly used for tracking where a web-site visitor came from, or where an e-mail message originated.

basicnet
01-22-2016, 01:40 PM
Now a days one of the main purpose of having reverse RDS is spam filtering

Yes, but it only makes works for domains with a *dedicated* IP. Just listing the hostname does not really work well here.

John

alicemaris558
01-25-2016, 06:56 AM
Reverse DNS is IP address to domain name (http://www.go4hosting.in/) mapping just as the DNS resolves domain names into associated IP addresses.

Alanah_Rae
02-15-2016, 10:27 AM
Thanks for the info. Its really helpful.

decyjohn
04-11-2016, 08:07 AM
Reverse DNS (rDNS) is a method of resolving an IP address into a domain name, just as the domain name system (DNS) resolves domain names into associated IP addresses.

decyjohn
04-11-2016, 08:35 AM
Thanks For Sharing your opinion.

onlinephotosale
04-21-2016, 04:08 AM
DNS, which stands for domain name system, controls your domain name's website and email settings. When visitors go to your domain name, its DNS settings control which company's server it reaches out to.

mani ge3e
06-24-2016, 02:20 AM
This site performs a reverse DNS lookup of an IP address by searching domain name registry and registrar tables. IP addresses are four numbers in the range of 0 to 255 separated by periods.

You may be able to identify the domain name of a spammer sending you spam email or the domain name of a computer trying to break into your firewall or someone trying to hack your system.

You may also be able to use this information to determine the name of the internet service provider assigned to a particular IP address

seoe
08-01-2016, 02:57 AM
Reverse DNS" redirects here. For Java-like naming convention, see Reverse domain name notation.
In computer networking, reverse DNS lookup or reverse DNS resolution (rDNS) is the determination of a domain name associated with an IP address via querying DNS - the reverse of the usual "forward" DNS lookup of an IP from a domain name.

The process of reverse resolving an IP address uses the pointer DNS record type (PTR record).

Although the informational RFC 1912 (Section 2.1) specifies that "Every Internet-reachable host should have a name" and that "For every IP address, there should be a matching PTR record...", it is not an actual standards requirement, and not all IP addresses have a reverse entry.

Bluesky94
11-01-2016, 08:27 AM
In computer networking, reverse DNS lookup or reverse DNS resolution (rDNS) is the determination of a domain name associated with an IP address via querying DNS the reverse of the usual "forward" DNS lookup of an IP from a domain name.

addisoncave
11-20-2016, 10:43 PM
According to me Reserve DNS is the determination of the domain name which is associated with given IP address.

johnsmith8446
07-14-2017, 07:05 AM
reverse DNS is nothing but reversing of your PCs DNS address for ex. 234 to 432 it is normally used to hide identity of user .

rvalmeekife
10-30-2017, 05:25 AM
A reverse DNS lookup retrieves the hostname of an IP address. It is the reverse of the usual forward DNS lookup where DNS is queried for the IP address of a certain hostname.

mobilepriceshop
10-30-2017, 06:19 AM
Reverse DNS is IP address to domain name mapping - the opposite of forward (normal) DNS which maps domain names to IP addresses.

Reverse DNS is separate from forward DNS.
Forward DNS for "abc.com" pointing to IP address "1.2.3.4", does not necessarily mean that reverse DNS for IP "1.2.3.4" also points to "abc.com".
This comes from two separate sets of data.

A special PTR-record type is used to store reverse DNS entries. The name of the PTR-record is the IP address with the segments reversed + ".in-addr.arpa".
For example the reverse DNS entry for IP 1.2.3.4 would be stored as a PTR-record for "4.3.2.1.in-addr.arpa".

Reverse DNS is also different from forward DNS in who points the zone (domain name) to your DNS server.
With forward DNS, you point the zone to your DNS server by registering that domain name with a registrar.
With reverse DNS, your Internet connection provider (ISP) must point (or "sub-delegate") the zone ("....in-addr.arpa") to your DNS server.
Without this sub-delegation from your ISP, your reverse zone will not work.

Reverse DNS is mostly used by humans for such things as tracking where a web-site visitor came from, or where an e-mail message originated etc.
It is typically not as critical in as forward DNS - visitors will still reach your web-site just fine without any reverse DNS for your web-server IP or the visitor's IP.

However reverse DNS is important for one particular application.
Many e-mail servers on the Internet are configured to reject incoming e-mails from any IP address which does not have reverse DNS.
So if you run your own e-mail server, reverse DNS must exist for the IP address that outgoing e-mail is sent from.
It does not matter what the reverse DNS record for your IP address points to as long as it is there. If you host multiple domains on one e-mail server, just setup reverse DNS to point to whichever domain name you consider primary.
(e-mail servers checking for reverse DNS do recognize that it is normal to host many domains on a single IP address and it would be impossible to list all those domains in reverse DNS for the IP).

Special note about AOL:
It appears that AOL has recently restricted this even further:
They also require that reverse DNS points to a "fully qualified domain name" (we assume they mean a name with 3 or more segments, such as "mail.jhsoft.com"), and that this name does not contain the segments "in-addr.arpa" and is not just an IP address.
If you want to be able to send e-mail to AOL users, the reverse DNS record for your e-mail server IP address must adhere to this as well.

Roja
10-31-2017, 05:36 AM
Reverse DNS is a method of resolving an IP address into a domain name, just as the domain name system resolves domain names into associated IP addresses.

digiturunc
08-12-2018, 11:11 AM
What does a "reverse DNS request" mean? And what does it do on a VPS server?
help with honest.

with rdns for example mail servers can authorize your email and verify that you are not spammer.. this is one of the checks