>>>Tech Bulletin: Outlook Anywhere<<<:
Tech Bulletin: Outlook Anywhere
This tech bulletin will introduce some basic information about Outlook Anywhere on Exchange 2007
Outlook Anywhere and Exchange 2007
Exchange Server 2003 enabled users to use the Windows RPC over HTTP Proxy component to access their Exchange information from the Internet. This technology wraps remote procedure calls (RPCs) with an HTTP layer. This allows the traffic to traverse network firewalls without requiring RPC ports to be opened. Exchange 2007 builds on this functionality and greatly reduces the difficulty of deploying and managing this feature. To deploy Outlook Anywhere in your Exchange messaging environment, you just have to enable at least one Client Access server by using the Enable Outlook Anywhere Wizard.
Benefits of Using Outlook Anywhere
There are several benefits to using Outlook Anywhere to enable Outlook 2003 and Outlook 2007 clients to access your Exchange messaging infrastructure. The benefits are as follows:
- Remote access to Exchange servers from the Internet.
- You can use the same URL and namespace that you use for Microsoft Exchange ActiveSync and Outlook Web Access.
- You can use the same Secure Sockets Layer (SSL) server certificate that you use for both Outlook Web Access and Exchange ActiveSync.
- Unauthenticated requests from Outlook cannot access Exchange servers.
- Clients must trust the certification authority that issues the certificate.
- You do not have to use a virtual private network (VPN) to access Exchange servers across the Internet.
You must allow only port 443 through your firewall, because Outlook requests use HTTP over SSL. If you already use Outlook Web Access with SSL or Exchange ActiveSync with SSL, you do not have to open any additional ports from the Internet.
Configure Outlook Anywhere in Outlook 2007
There are several requirements for this feature:
· Microsoft Windows Vista, or Windows XP with Service Pack 1 and the Q331320 hotfix (or a later service pack) installed on users' computers
· Office Outlook 2007 or Outlook 2003
· Microsoft Exchange Server 2003 or later e-mail accounts
· Microsoft Windows Server 2003 or later (required for server components only)
To configure Office Outlook 2007 with Outlook Anywhere as part of your Outlook deployment, you enable the option in the Office Customization Tool (OCT) and (optionally) specify additional settings—such as security-level requirements for communication with the Exchange server. After you specify these options, you save the settings with other configurations in the Setup customization file you use to deploy Outlook to your users.
1. In the OCT, in the Outlook area, on the Specify Exchange Settings page, select Configure settings for a new Exchange Server connection or replace the settings in an existing Exchange Server connection.
2. If you are defining a new Exchange server for users, enter a value or replaceable parameter in User name.
For instance, you might specify =%UserName% to use the exact logon name for each user. This helps prevent user prompts when Outlook asks users to choose between several variations.
3. If you are defining a new Exchange server, for Exchange Server, enter the name of the Exchange server.
You can skip steps 2 and 3 if you are configuring Outlook Anywhere for existing Exchange users who are not moving to a new Exchange server.
4. Click More Settings.
5. Select the Connect to Exchange Mailbox using HTTP check box.
6. Type the server name for the Outlook Anywhere proxy server.
Do not enter http:// or https:// as part of the name. The appropriate entry (http:// or https://) is included automatically in the box after you enter the name, based on the authentication settings you choose.
7. Choose whether or not to reverse default behavior for how Outlook chooses which connection type to try to use first, LAN or Outlook Anywhere.
8. Select an authentication method.
The default method is Password Authentication (NTLM).
9. Click OK to return to the Specify Exchange Settings page.
10. Complete other Outlook or Office configurations and click Finish to create the customization file that you can deploy to your users.
Outlook Anywhere option
The following table explains the Outlook Anywhere options for configuring connection type and authentication method. Outlook uses default values for these options that are likely to provide a good experience for your users and to help provide secure connections to your network. These configuration options cannot be locked down by using Group Policy.
Outlook Anywhere option
On a fast network, connect using HTTP first, then connect using TCP/IP.
By default on a fast network, Outlook attempts to connect by using the LAN connection first. This option is cleared by default.
On a slow network, connect using HTTP first, then connect using TCP/IP.
By default, on a slow network, Outlook attempts to connect by using HTTP first. This option is set by default.
Password Authentication (NTLM).
The default authentication method. We recommend that you specify this option together with Connect with SSL only and Mutually authenticate the session when connecting with SSL.
Basic Password Authentication.
With this option, users are prompted for a password each time a connection is made to the Exchange server. In addition, if users are not using Secure Sockets Layer (SSL), the password is sent in clear text. This can pose a security risk.
Best regards,Sophie Tan
Partner Online Technical Community
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