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Secure Protocols: RCP over HTTP

Introduction

RPC over HTTP is Microsoft a technology that allows Outlook 2003 users to connect to their Exchange mailbox from a remote location without a virtual private network (VPN) connection to their Exchange servers. This allows Outlook 2003 users to access their Exchange mailboxes over the internet while traveling or working outside their office and features the full functionality of Outlook 2003.

This document will guide you through the configuration of Outlook 2003 for RPC over HTTP.

Requirements

  • While Microsoft Windows XP with Service Pack 2 is recommended, a minimum of Windows XP with Service Pack 1 and the Q331320 hotfix are required
  • Outlook 2003

Configuration Steps

  1. Create a new Outlook profile for secure HTTP connectivity.
    • For a new configuration of Outlook, click start, right-click E-Mail, and then click Properties.
    • For an existing configuration of Outlook, Click start, click Control Panel, click Mail.

    Mail Setup Window

  2. In the Mail Setup - Outlook window, click the Show Profiles button.

    Show Profiles Window

  3. In the Mail window, click the Add button.
  4. In the Create New Profile window, type Secure RPC over HTTP and click the OK button.

    Create Profile Window

  5. In the E-Mail Accounts window, select Add a new e-mail account and click the Next button.

    Email Accounts Window

  6. In the E-mail accounts: Server Type window, select Microsoft Exchange Server and click the Next button.

    Seclect Account Type Window

  7. In the E-mail Accounts: Exchange Server Settings window, enter utdevs08.campus.ad.utdallas.edu in the Microsoft Exchange Server field.

    Account Details Window

  8. Verify that the Use Cached Exchange Mode checkbox is checked.
  9. Enter your NetID in the User Name box.
  10. Click the More Settings button.
    Note: Outlook may appear to stop responding for a minute or two after clicking the More Settings button. However, important processing is taking place. The following warning message may also appear. If so, simply click the OK button and continue with the remaining configuration steps.

    Images has been modified to fit the Web site. Error message

  11. In the Microsoft Exchange Server window, click the Connection tab.

    Select Connection Window

  12. Check Connect to my Exchange mailbox using HTTP. Then click the Exchange Proxy Settings button.
    Note: If the Exchange Proxy Settings button does not appear in the Microsoft Exchange Server window, the Q331320 hotfix referenced at the top of this document may need to be installed. You may obtain the hotfix here
  13. In the Exchange Proxy Settings window, make the following modifications:
    • Enter rpc.utdallas.edu in the https:// field,
    • Make sure the Connect using SSL only checkbox is checked,
    • Check the Mutually authenticate the session when connecting with SSL checkbox,
    • Enter msstd:rpc.utdallas.edu in the Principal name for the proxy server field,
    • Check the On fast networks, connect using HTTP first, then connect using TCP/IP checkbox,
    • Make sure the On slow networks, connect using HTTP first, then connect using TCP/IP checkbox is checked.
    • Under Proxy authentication settings, select Basic Authentication,


    Proxy Settings Window

  14. Click the OK button to close the Exchange Proxy Settings window.
  15. Click the OK button to close the Microsoft Exchange Server window.
  16. At the E-Mail Accounts: Exchange Server Settings window, click the Next button. Then click the Finish button to complete the configuration.
  17. Back at the Mail window, select either Prompt for a profile to be used or Always use this profile and click the OK button.
    • Select Always use this profile if you plan to use Outlook 2003 only for RPC over HTTP.
    • Select Prompt for a profile to be used if you have other profiles in addition to the RPC over HTTP profile you are creating now, and would like Outlook to prompt you for the desired profile each time Outlook is launched.


    Show Profiles Window

  18. Outlook 2003 should now be configured to use RPC over HTTP.

Usage

Launch Microsoft Outlook 2003
Note: If you chose the Prompt for a profile to be used option in Step 3 of the configuration above, the following Choose Profile window will appear.


Select RPC Window

Select RPC over HTTP from the drop down menu.

When prompted, type your domain credentials in the form CAMPUS\NetID and Password.
Note: The first time that you launch Outlook configured for RPC over HTTP, it may take up to 5 minutes or more, depending on your connection speed and the size of your mailbox, for Outlook to synchronize your mailbox items with the Exchange server.


Login prompt window