How to configure Exchange to redirect OWA HTTP requests to HTTPS requests in IIS 7How to configure Exchange to redirect OWA HTTP requests to HTTPS requests in IIS 7.

To redirect incoming Outlook Web Access (OWA) HTTP requests to HTTPS requests in Exchange Server, configure Internet Information Services (IIS) as follows:

  1. Enable SSL redirection to the OWA virtual directory on the "Default Web Site."
  2. Disable the SSL requirement on the "Default Web Site."

To enable SSL redirection to the OWA virtual directory, follow these steps:

  1. Start IIS 7 Manager.
  2. Expand the server, expand Sites and select the Default Web Site.
  3. Double-click HTTP Redirect.
  4. Select the Redirect requests to this destinationcheck box, and then enter /owa.
  5. Select the Only redirect requests to content in this directory (not subdirectories)check box.
  6. Select Found (302) from the Statuscode drop-down list.
  7. Click Apply to save the settings.
    Note The changes that you made to the Default Web Site will propagate down to the virtual directories for that site.
  8. Expand the Default Web Site.
  9. Select the aspnet_client virtual directory.
  10. Double-click HTTPRedirect.
  11. Clear the check box for Redirect requests to this destination.
  12. Click Apply to save the settings.
  13. Repeat steps 9-12 for the following virtual directories:
    • Autodiscover
    • Ecp
    • EWS
    • Microsoft-Server-ActiveSync
    • OAB
    • Owa
    • PowerShell
    • PowerShell-Proxy
    • Rpc

To disable the SSL requirement on the "Default Web Site," follow these steps:

  1. Start IIS 7 Manager.
  2. Expand the server, expand Sites and select the DefaultWebSite.
  3. Double-click SSLSettings.
  4. Clear the check box for Require SSL.
  5. Click Apply to save the settings.
    Note The changes that you made to the Default Web Site will propagate down to the virtual directories for that site.
  6. Expand the Default Web Site.
  7. Select the Autodiscover virtual directory.
  8. Double-click SSL Settings.
  9. Select the Require SSLcheck box.
  10. Click Apply to save the settings.
  11. Repeat steps 7-10 for the following virtual directories:
    • Ecp
    • EWS
    • Exchange
    • Exchweb
    • Microsoft-Server-ActiveSync
    • OAB
    • Owa
    • Public
    • Rpc