Bind DNS Cname entry

Hello,  I am new to DNS and I need to create a Cname record for a host on our domain abc.domainA.com to resolve to efg.domainB.com .  I tried to create a Cname entry to our Bind DNS but this doesn't work. Our domain is domainA.com.
SyFyAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Khandakar Ashfaqur RahmanExpert/ConsultantCommented:
They are different domain.You have to create CNAME within the same domain.

Put the following records:

abc          A                   1.2.3.4
efg          CNAME           abc.domainA.com.
0
Kerem ERSOYPresidentCommented:
Hi,

It does not work this way. Since your domain name is domainA.com the DNS server will only lookup and serve requests for domainA.com. So if you want your domain server to respond to domainB.com you2ll need to setup anther zone for the domainB.com over your nameserver.

Please don't forget to edit your domain and make sure that domainB.com has your nameserver IP adresses in the registry so that requests for your doian could reach to your server.

Cheers,
K.
0
SyFyAuthor Commented:
Hi All

I tried the Cname and it didn't work.  Let me give more detail.
Our vendor wants us to configure our public Bind DNS as following.

They want sip.ourdomain.com to resolve to lync.vendorsdomain.com
In AD DNS, its easy to just create a CNAM and it resolves.  How can we
replicate this in Bind DNS.
0
Kerem ERSOYPresidentCommented:
They want sip.ourdomain.com to resolve to lync.vendorsdomain.com
In AD DNS, its easy to just create a CNAM and it resolves.  How can we
replicate this in Bind DNS.

IT resolves becasue all your internal hosts resolve all DNS requests over your AD server. But over internet things don't work this way. Every domain is recursively queried and the results are brought after individual queries to the related servers. Since all queries are done individually there's no way that you can CNAME another domain.

So what you will do is to modify the Domain registration for both domains to point to your DNS servers. Setup DNS service for both domains. There's no way that you do it the way you do in your intranet.

Cheers,
K.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Linux Networking

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.