In part 1 we covered the deployments steps for Exchange 2013, in Part 2 of this series we covered Exchange 2013 configurations and testing, in this part we will start our migration. Make sure to start these configuration outside business hours, also plan a proper downtime to complete these steps and test them.

6.Move Client Access from Exchange 2007 to Exchange 2013

Virtual Directories

Open Exchange 2007 management shell and run the following commands.

OWA:

Set-OwaVirtualDirectory -Identity "e12-01OWA (Default Web Site)" -ExternalUrl https://legacy.contoso.com/owa

OAB:

Set-OabVirtualDirectory -Identity "e12-01OAB (Default Web Site)" -InternalUrl https://legacy.contoso.com/oab -ExternalUrl https://legacy.contoso.com/oab

ActiveSync

Set-ActiveSyncVirtualDirectory –Identity “e12-01Microsoft-Server-ActiveSync (Default Web Site)” –ExternalUrl $Null –InternalUrl https://legacy.contoso.com/Microsoft-Server-ActiveSync

Web Services:

Set-WebServicesVirtualDirectory –Identity “e12-01EWS (Default Web Site)” -InternalUrl https://legacy.contoso.com/ews/exchange.asmx –ExternalUrl https://legacy.contoso.com/EWS/Exchange.asmx

Unified Messaging:

Set-UMVirtualDirectory -Identity "UnifiedMessaging (Default Web Site)" –InternalUrl https://legacy.contoso.com/UnifiedMessaging/services.asmx –ExternalUrl https://legacy.contoso.com/UnifiedMessaging/services.asmx

Outlook Anywhere:

Set-OutlookAnywhere -Identity "E12-01Rpc (Default WebSite)" -IISAuthenticationMethods Basic,Ntlm

TMG Rules:

Create/update your TMG publish rules

For Exchange 2007 update your publish rules to accept connections for Legacy name space:

Follow the steps in this link to publish Exchange 2013.

DNS Configurations:

Update your DNS records as follows

Internal DNS

Record/Type	Comment
mail.contoso.com	Point to Exchange 2013 server
autodiscover.contoso.com	Point to Exchange 2013 server
Legacy.contoso.com	New record points to Exchange 2007 Server

Public DNS

Record	Comment
mail.contoso.com	Point to TMG Listener
autodiscover.contoso.com	Point to TMG Listener
Legacy.contoso.com	New record Point to TMG Listener

Testing

Apply all your test scenarios for both internal and External client types; once again you can use Microsoft Remote Connectivity Analyzer

7.Move Mailboxes:

Once you complete your tests successfully, its time to start moving mailboxes. you can do this using EAC or Shell.

New-MoveRequest -Identity 'mohsaeed@contoso.com' -TargetDatabase "DB01"

You can create Batch moves as described in this link. Once you complete your mailboxes migration let us move to the final steps in this migration process (PF Migration and Exchange 2007 Decommissioning).