Hello,

at this moment we are outsourcing our mail server to another company and have this infrastructure:

• Our companies domain A, where are all users accounts;
• Domain B where are Exchange Server 2013 servers with Linked mailboxes;
• There are trust between Domain A and Domain B;
• Users from domain A connecting to linked mailboxes in domain B and have mail addresses "user@domainA";

Now we would like to install our own Exchange server in our domain A and migrate all mailboxes from Domain B. So it would be cross forest Exchange 2013 -> Exchange 2013 Linked mailbox migration. 

Does there are any document, where we could find information about similar cases? Could someone help me with steps what to do, to achieve this goal?

Regards,
Nerijus

Nerijus

Hi

Please try the following steps in Exchange 2013 of account forest domainA:
$Local = Get-Credential   (domainA)
$Remote = Get-Credential  (domainB)

Prepare-MoveRequest.ps1 -Identity user@domainA.com -RemoteForestDomainController DC001.domainB.com -RemoteForestCredential $RemoteCredentials -LocalForestDomainController DC001.domainA.com -LocalForestCredential $LocalCredentials -UseLocalObject

New-MoveRequest -Identity "user@domainA.com" -Remote -TargetDatabase "domainB Mailbox Database Name" -RemoteHostName 'CAS01.domainB.com' -RemoteCredential $Remote -TargetDeliveryDomain "domainA.com"

Regards,

Your another option would be to export all the required mailboxes into PST and import them into desired location wherever you want to move.

You might get help using this application (http://www.exchangemailboxtopst.org/) that seems to be a suitable choice in order to get this job done in more easier way.