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DNS Prerequisites for Cross Forest Migration

Lets see how to create a conditional Forwarder in Microsoft DNS and inflobox to Create Two way transitive Trust prior to the migration.

Open Microsoft DNS Manager – Right Click on Conditional Forwarder – New Conditional forwarder

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Enter the Other Forest Domain Name

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Choose OK.

So any request to Azure365pro.com

ad.azure365pro.com will resolve from 172.21.1.100

Am doing this from Forest A to Forest B (Azure365pro.com)

Lets see how to create the same forwarder if you have a custom DNS Solution like inflobox

Adding Forwarding zone in Inflobox for Azure365Pro.com

Step 1 – Add Forward Zone

 

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Step 2 – Add and authoritative forward-mapping zone

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Step 3 – name – azure365pro.com

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Add Name Servers

azure365pro.com Name Servers / Domain Controllers (AD Integrated DNS Servers)

azure365pro.com 10.10.10.10

azure365pro.com 10.10.10.11

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Step 4 – Leave members empty

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Step 5 – Leave Extensible Attributes empty

Choose Next

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Step 6 – Choose Save and Close

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Satheshwaran Manoharan
Satheshwaran Manoharanhttps://www.azure365pro.com
Specialized in Microsoft Azure - Office 365 / Microsoft Exchange; conducted numerous projects worldwide in designing, supporting, and implementing messaging and virtualization infrastructure for medium-sized and large enterprises. Further, I am a Cloud Architect and Technical Advisor for various start-ups.

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