How to Setup and configure the Legacy option with EXCH07

1-      Pre-requisties: 

§  Second internet IP address and point it to an A record called legacy.

§  Access to the internal and external DNS service.

2-       In the FW point both ip addresses mail and legacy to the old exchange server.

3-      Create the SSL certificate and include the legacy.internetdomainname as one of the Subject Alternative Name. Install the certificate in the new exchange2010

4-      Make sure the RPCoverHTTP server component is installed in the 2010

5-      Configure OWA and Outlook Anywhere as well.

6-      Move the OAB and enable web distribution

7-      After the certificate is ready, install it in the Exchange 2010

8-      Export the certificate to a file

9-      There may be a small outage of service till you make the 2007 work with the 2010 so, inform the admin or your contact.

10-   Import the certificate to the Exchange 2007

11-   This is needs to be done in the 2007 HUB server

Disable-OutlookAnywhere –Server EXCH2007

12-   All the below needs to be done in the 2007 CAS

Set-OWAVirtualDirectory –Id EXCH07\OWA*
-ExternalURL https://legacy.company.co.uk/owa

Set-OABVirtualDirectory –Id EXCH2007\OAB*
-ExternalURL https://legacy.company.co.uk /OAB

Set-UMVirtualDirectory –Id EXCH2007\Unified*
-ExternalURL https://legacy.company.co.uk /UnifiedMessaging/Service.asmx

Set-WebServicesVirtualDirectory –Id EXCH2007\EWS* -ExternalURL https://legacy.company.co.uk /ews/exchange.asmx

Set-ActiveSyncVirtualDirectory –Id EXCH2007\Microsoft* -ExternalURL https://legacy.company.co.uk /Microsoft-Server-ActiveSync

13-   Configure the legacy in the internal DNS to point to the Exchange 2007 and mail and autodiscover to point to the Exchange 2010 if exist in the internal DNS.

14-   Configure the FW to point the old IP address to the new Exchange 2010

15-   Move one of the test mailbox and test OL Anywhere, webmail and mobile.

16-   Test it as well with a mailbox in the 2007 server.