Applies to: Exchange Server 2010 SP1
Topic Last Modified: 2012-07-23
Estimated time to complete: 5 minutes
When you configure a hybrid deployment between your on-premises Exchange 2003 organization and the cloud-based organization, your users will see two Outlook Web App URLs. The first URL refers to your on-premises Exchange 2003 front-end server, and the second URL is the cloud-based URL used by mailboxes that you move to the cloud.
If you want to make the transition easier for users whose mailboxes are moved to the cloud, you can configure the Exchange 2010 hybrid server to handle all Outlook Web App requests using a single, common URL. The following will happen when an Outlook Web App request arrives at the hybrid server:
- Request for an Exchange 2003
mailbox The hybrid server automatically
redirects Outlook Web App requests for Exchange 2003 mailboxes to
the Internet-accessible Exchange 2003 front-end server.
- Request for a cloud-based mailbox The
hybrid server displays the Outlook Web App URL in the cloud-based
organization and instructs the user to use the new URL. The user
has the option to add the new URL to their browser's Favorites
list.
To configure Outlook Web App for a hybrid deployment, you must also do the following:
- Configure forms-based authentication on the Exchange 2003
server. Learn more at: How to Configure Forms-Based Authentication on Exchange
Server 2003
- Make both your Exchange 2003 and Exchange 2010 hybrid servers
accessible from the Internet and configure external FQDNs for each
server. This task is covered later in this checklist.
- When you're ready for your hybrid server to accept incoming
Outlook Web App requests, reconfigure your primary Outlook Web App
URL to reference the hybrid server external FQDN. We recommend that
you use owa.<domain> for your primary Outlook Web App URL.
For example, owa.contoso.com. This task is covered later in this
checklist.
Learn more at: Understanding Access to Outook Web App with a Single URL
 Caution: |
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| This topic is meant to be read as part of the Microsoft Exchange Server 2003 and Office 365 Hybrid Deployment checklist. Information or procedures in this topic may depend on prerequisites configured in topics earlier in the checklist. To view the checklist, see Checklist - Exchange 2003 and Office 365 Hybrid Deployment. |
How do I configure Exchange 2003 Outlook Web App redirect?
You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "Outlook Web App virtual directories" entry in Client Access Permissions.
To redirect Outlook Web App requests for an Exchange 2003 mailbox to an Exchange 2003 front end server, use the following command in the Exchange Management Shell on the hybrid server:
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Set-OwaVirtualDirectory "OWA (Default Web Site)" -Exchange2003Url "https://mail1.contoso.com/exchange" |
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How do I configure cloud-based Outlook Web App redirect?
You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "Organization relationships" entry in Mailbox Permissions.
To enable the hybrid server to display the Outlook Web App URL for the cloud-based organization to users whose mailboxes have been moved to the service, use the following command on the hybrid server:
 Important: |
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| Don't add a trailing slash ( / ) to the end of the URL in the following command. |
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Set-OrganizationRelationship "To Cloud" -TargetOWAUrl "https://outlook.com/owa/contoso.com" |
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How do I know this worked?
Use the following steps to validate that you've correctly set up Exchange 2003 Outlook Web App and cloud-based Outlook Web App redirection.
| Important: |
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| You haven't reconfigured your primary Outlook Web App URL to reference the hybrid server yet. To test your configuration, you'll need to reference the externally accessible FQDN of the hybrid server. You'll reconfigure your primary Outlook Web App URL at a later step in the checklist. |
To verify whether you've correctly configured Exchange 2003 redirection, do the following:
- Browse to the Outlook Web App URL of your hybrid server. You
need to use the externally accessible FQDN of the hybrid server.
For example, https://mail2.contoso.com/owa.
- Enter the credentials of a mailbox that's located on your
Exchange 2003 server.
- If Exchange 2003 redirection is working, the hybrid server will
automatically redirect your request to the Exchange 2003 server and
log you on to the mailbox automatically.
To check whether you've correctly configured cloud-based redirection, you’ll have to wait. You can’t use the test mailbox you created at the beginning of this checklist in the Verify Service Configuration step to verify cloud-based redirection. You’ll need to use the test mailbox that will be created in the Create Test Mailbox step later in this checklist. Don’t worry; we’ll remind you when you get there.
Having problems? Ask for help in the Office 365 forums. To access the forums, you'll need to sign in using an account that's granted administrator access to your cloud-based service. Visit the forums at: Office 365 Forums