Two way AD trust with multiple domain controllers and site

I have below scenario

Domain : abc.com
SiteA: 2 domain Controllers (PDC and SDC)
SiteB: 2 Domain Controllers
SiteC: 2 Domain controllers

Domain: xyz.com

SiteD: 2 domain Conterollers (PDC and SDC)

all my domain controllers are Global Catalogue Servers

I have opened required ports for Trust between abc.com siteA domain controllers and xyz.com siteD domain contollers.

Successfully established two way forest trust between abc.com and xyz.com.

When i am trying to add or search resource in abc.com from xyz.com, it is successfully adding and can view  objects from xyz.com.

However, If i am trying to add or search resources in xyz.com from abc.com, it is giving me null result and unable to view any of the objects from abc.com domain.

Here i found something

When i am trying to resolve the IP for abc.com from xyz.com workstation it is resolving with IP of siteB or SiteC Domain controllers, but the ports are only opened between SiteA and SiteD domain controllers.

Can anyone help here?
LVL 1
Sudheesh SurendranSystem analystAsked:
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MaheshArchitectCommented:
Idealy from xyz.com, you should be able to resolve Site A DCs only for abc.com dns query, however I guess What happening here is, you cannot control DNS behavior when you simply ping abc.com from xyz.com, it will randomly pickup any resolved DC, it can be from site B or C
what you need to do, on Site D domain controllers, open host file and enter site A domain controllers as host record for abc.com, then they should pickup site A DCs only

Else ports need to be opened between all DCs
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Seth SimmonsSr. Systems AdministratorCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: Mahesh (https:#a42460774)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

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