Quick Answer: What Is PTR For?

What should my PTR record be?

PTR records are used for the Reverse DNS (Domain Name System) lookup.

Using the IP address you can get the associated domain/hostname.

An A record should exist for every PTR record.

The usage of a reverse DNS setup for a mail server is a good solution..

Why are PTR records important?

A PTR record, or pointer record, enables someone to perform a reverse DNS lookup. This allows them to determine your domain name based on your IP address. Because generic domain names without a PTR are often associated with spammers, incoming mail servers identify email from hosts without PTR records as spam.

Where do I put PTR record?

Adding a PTR record to an IPv4 addressIn the menu bar, go to section “Dedicated & Bare Metal” and select “All servers”.The overview of Dedicated & Bare Metal servers is displayed.Click the IP address for the server hosting pack to which you want to add the PTR record.More items…

How do I find my DNS?

The DNS you use In most other versions of Windows, click on Start, then All Programs, then Accessories, and finally on Command prompt. Type “ipconfig /all” followed by Enter. You’ll get a lot of information. In the midst of all that information, you can see “DNS Servers” listed.

Are PTR records necessary?

You need a PTR record because many mail servers will reject email that comes from a mail server without one.

How does a PTR record work?

While the main purpose of the Domain Name System is to point domains to IP addresses, a PTR record works in the opposite way – it associates an IP with a domain name. Because of its purpose, a PTR record is sometimes called Reverse DNS Record. … One PTR record can be configured per IP, linking that IP to a single domain.

How do I setup a PTR record?

To create the PTR Record:Add a new PTR record. … For the Canonical Hostname, enter the domain you’d like the IP address to resolve. … After you’ve saved your file zone, allow time for the change before validating the new reverse DNS record.

How do I find my DNS PTR record?

How To Use NSLOOKUP to View Your DNS RecordsLaunch Windows Command Prompt by navigating to Start > Command Prompt or via Run > CMD.Type NSLOOKUP and hit Enter. … Set the DNS Record type you wish to lookup by typing set type=## where ## is the record type, then hit Enter. … Now enter the domain name you wish to query then hit Enter..More items…•

Where is PTR record stored?

PTR records are not stored within your domain zonefile, they are stored in a zonefile usually managed by your service provider or network provider. Some service providers provide an interface where you can create the PTR record yourself, others require you to submit a support request to create or change the PTR record.

How do I reverse lookup my IP address?

The Reverse DNS Lookup Tool requires you to enter the IP address that has a corresponding host name. By entering the IP address into the Reverse DNS Lookup Tool, you are able to find the domain name associated with the corresponding IP. For example, one IP address of Google.com is 74.125. 142.147.

How do I know if my DNS server is working properly?

Run ipconfig /all at a command prompt, and verify the IP address, subnet mask, and default gateway. Check whether the DNS server is authoritative for the name that is being looked up. If so, see Checking for problems with authoritative data.

How long does it take for a PTR record to propagate?

24 hoursThe general rule is propagation takes 24 hours to complete worldwide. However, in some cases, this can take up to 48 hours, depending on DNS record TTLs.

Why do we need reverse lookup zone?

Reverse Lookup Zones. As mentioned earlier, a reverse lookup zone is an authoritative DNS zone that is used primarily to resolve IP addresses to network resource names. This zone type can be primary, secondary, or Active Directory—integrated.

How do I create a reverse DNS record for email server?

Select Servers, then click the link for your Cloud Server from your Servers List. On the Server Details screen, click Add Record next to the Reverse DNS. In the Add Record pop-up window: Enter your domain name (for example mail.example.com) in the Hostname field.

How do I check my DNS?

Check DNS Settings in WindowsOpen the Control Panel by clicking on the Windows button, then click Control Panel.Type “Network and Sharing” in the upper right hand corner and click on Network and Sharing Center.Click Change Adapter Settings.More items…