Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

reverse dns lookup question.

Posted on 2013-02-01
5
380 Views
Last Modified: 2013-02-02
when I lookup ip using the public dns tools, I type in the hostname and it returns the IP.  When I type in the IP address in reverse dns lookup, it does not return the hostname.  

HOw do I know the reverse dns record is setup correctly in public dns servers?

Please advise.

Thanks.
0
Comment
Question by:nav2567
  • 4
5 Comments
 
LVL 10

Expert Comment

by:cpmcomputers
ID: 38846301
If it returns nothing
There is no reverse Dns set

If it returns and incorrect (or an in-arpa )
Address
You will need to request it is modified from your service provider
0
 
LVL 10

Expert Comment

by:cpmcomputers
ID: 38846308
Read through this thread
It gives reasonable background to rdns

http://forums.cpanel.net/f5/how-set-reverse-dns-lookup-53575.html
0
 

Author Comment

by:nav2567
ID: 38846553
Here is the problem.  We have an A record for ftp.domain1.com and a cname record ftp.domain2.com ftp.domain1.com.  We have a connection problem with ftp.domain2.com which we believe the reverse lookup record is not setup correctly.  

What do we need to tell our DNS provider?
0
 
LVL 10

Expert Comment

by:cpmcomputers
ID: 38846589
If this is FTP routing access (using A &cname alias)
I cannot see how rdns is involved at all?

Can you describe the connection error and what you are trying to do in more detail ?
0
 
LVL 10

Accepted Solution

by:
cpmcomputers earned 500 total points
ID: 38846601
This article describes rdns and how it is used

http://www.simpledns.com/kb.aspx?kbid=1052

As you will see it suggests rdns is not relevant to your problem
Which is all forward resolution dependent on A and CNAME records
0

Featured Post

Resolve Critical IT Incidents Fast

If your data, services or processes become compromised, your organization can suffer damage in just minutes and how fast you communicate during a major IT incident is everything. Learn how to immediately identify incidents & best practices to resolve them quickly and effectively.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
server DNS address could not be found 22 251
SPF record. 2 30
Server 2008 to 2016 Essentials migration problem 6 105
Windows 2012 DNS island on Domain Contoller 2 28
One of the most often confused topics in the area DNS is the idea of GLUE records. Specifically, what they are, when they are needed, when they are provided, and how they are created. First, WHAT IS GLUE? To understand GLUE, you must first under…
I've written instructions for one router type, but this principle may be useful for others of the same brand and even other brands of router. Problem: I had an issue especially with mobile devices that refused to use DNS information supplied via…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question