Question

Similar AD domain and DNS zone Name

Asked by: jskfan

Similar AD domain and DNS zone Name

we have in Memphis a domain named priv.domain1.com
on the DNS  there are 3 zones:

priv.domain1.com (AD Integrated)
DOMUS.com (Primary)
DOMAF.com

we have in Atlanta a domain named DOMUS.com (as you can notice the domain name is similaire to the DNS zone DOMUS in Memphis)
the Atlanta domain has only one DNS zone:
DOMUS.com( AD Integrated)


Well, now using a domain controller in Atlanta I created a 2 way Trust between DOMUS.com domain and priv.domain1.com.

it looks like from Atlanta domain DOMUS.com, things are good. I can create a share and add users from priv.domain1.com and grant them permissions, but if I try this from Memphis, when I go to add a user/click on Locations I can see DOMUS.com with a Triangle icon in the left side of it,  I select DOMUS.com but when I click advanced and click Find now, it doesn't show any user.

I am pretty sure the cause of this problem is because of the DNS zone name in Memphis that has the same name as the domain name in Atlanta(DOMUS.com).

I would like to know if there is a workaround this, so that I can add users to shares from both domains.

Thanks

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Asked On
2009-11-06 at 10:35:39ID24878864
Topic

Active Directory

Participating Experts
5
Points
500
Comments
13

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Answers

 

by: oBdAPosted on 2009-11-06 at 10:59:39ID: 25761968

The only thing you can do about it is to move all the DNS entries currently in domus.com in Memphis to the server in Atlanta.
Then either
- remove the domus.com zone in Memphis, and setup conditional forwarding for domus.com in Memphis to point to your AD servers, or
- delegate the domus.com zone in Memphis to your AD DNS servers, or
- set it up as a secondary zone for your primary AD domus.com zone.

 

by: giltjrPosted on 2009-11-06 at 11:02:35ID: 25762002

MS really likes to confuse people and use their own terms for things that are already existing.

An AD domain name must map to a DNS domain, which is also called a zone.

So AD Domain = IP DNS Domain = IP DNS Zone.

So you have two "separate" networks/locations that have the same domain name, but are using their own unique primary  DNS servers.

The admins at the two sites need to work out who is really going to "own" DOMUS.com.  The other site can be a secondary DNS server for that zone/domain.

Since the Atlanta site is using DOMUS.com as their AD domain name, they should be the primary for that zone/domain.  The Memphis should have their DNS setup to be a secondary DNS server for that domain/zone.

 

by: ITworksPosted on 2009-11-06 at 11:03:28ID: 25762012

I don't know of a workaround for something like this.  I would recommend configuring a global catalog memphis in atlanta and vice versa.  I would also recommend adding the domain as a search domain in the IP settings (right click network connection, properties, advanced, dns, search domains)

That might work as a workaround but I'm not sure . . . DNS is the heart of an AD network and by creating a zone already you may have "broken" the link between that trust.  It might be better to delete the zone, global catalog, and then add changes as needed.

 

by: garyraffertyPosted on 2009-11-06 at 11:17:11ID: 25762175

What are the permissions on the receieve connector

 

by: jskfanPosted on 2009-11-07 at 00:05:11ID: 25765403

Let me make sure I am clear with AD domain and DNS domain zone.

we can have a DNS zone but no AD domain for that zone.
in our case:
in Memphis there is domain named priv.domain1.com which I mean an Active Directory Domain for priv.domain1.com
but there is no AD domain DOMUS.com, just DNS zone(there is no DC for DOMUS.com in Memphis)
on the DNS  there are 3 zones:
priv.domain1.com (AD Integrated)
DOMUS.com (Primary)
DOMAF.com

in Atlanta its an AD domain named DOMUS.com (as you can notice the domain name is similaire to the DNS zone DOMUS in Memphis)
the Atlanta domain has only one DNS zone:
DOMUS.com( AD Integrated)

What I was thinking as work around is to add A records of the DCs(DOMUS.com in Atlanta) to the DNS zone(DOMUS.com) in Memphis, but I am not sure if A record by itself will help since it is about AD search which requires other records too.

 

by: jskfanPosted on 2009-11-07 at 00:13:38ID: 25765420

In addition:
If there is no work around for this and I try to apply the two trust, would this mess up anything?

 

by: jskfanPosted on 2009-11-07 at 00:53:09ID: 25765492

ITworks:
<<It might be better to delete the zone, global catalog, and then add changes as needed.>>

in Memphis if I copy the records of DNS zone DOMUS.com to Atlanta DNS zone DOMUS.com(Which is the AD Domain Name) then delete the DNS zone DOMUS.com from Memphis DNS. Would this work for 2 way trust?

 

by: jskfanPosted on 2009-11-07 at 00:59:29ID: 25765505

oBdA:
<<The only thing you can do about it is to move all the DNS entries currently in domus.com in Memphis to the server in Atlanta.
Then either
- remove the domus.com zone in Memphis, and setup conditional forwarding for domus.com in Memphis to point to your AD servers, or>>>

That;s what I thought too as a solution.

I didn't get these 2 optios you added:
<<<- delegate the domus.com zone in Memphis to your AD DNS servers, or
- set it up as a secondary zone for your primary AD domus.com zone>>>


 

by: giltjrPosted on 2009-11-07 at 04:47:46ID: 25766086

--> we can have a DNS zone but no AD domain for that zone.

--> What I was thinking as work around is to add A records of the DCs(DOMUS.com in Atlanta) to the DNS zone(DOMUS.com) in Memphis, but I am not sure if A record by itself will help since it is about AD search which requires other records too.

You are correct, that will not work because of all of the other A records that are needed.  You would have to add A records for EVERY thing.

--> In Memphis if I copy the records of DNS zone DOMUS.com to Atlanta DNS zone DOMUS.com(Which is the AD Domain Name) then delete the DNS zone DOMUS.com from Memphis DNS. Would this work for 2 way trust?

Yes, however after you copy the needed entries you could make Memphis a secondary for DOMUS.com.   This way Memphis will not need to forward resolution requests for DOMUS.com to Atlanta, thus reducing WAN traffic between the sites.

In fact you can make the DNS servers in Atlanta secondaries for DOMAF.us and priv.domain1.com to help reduce traffic between the sites.

 

by: calltmsPosted on 2009-11-07 at 06:12:08ID: 25766384

essentially you should have the DOMUS.com zone look identical in both networks, and you want it to automatically update each other.  So if by copying information over and setting up the trust to transfer over DNS info works, don't delete anything.  You may need to delete first and then set up GC.

 

by: jskfanPosted on 2009-11-07 at 10:26:21ID: 25767411

calltms:

domus.COM zone records in both networks are different:
first the records are not the same, second the zone DOMUS.com in Atlanta is AD Integrated and in Memphis it's primary.
The easiest way I guess it's to delete the zone in Memphis and merge its records with the zone in Atlanta, in Memphis add forwarders( DOMUS.com).

 

by: giltjrPosted on 2009-11-07 at 13:39:11ID: 25768174

An AD Integrated zone is a IP DNS primary zone.

 

by: jskfanPosted on 2009-11-07 at 16:07:29ID: 31651164

Thanks Guys

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