Microsoft KB Archive/817319

= Gzip-Encoded Content Support for OWA in Exchange Server 2003 =

PSS ID Number: 817319

Article Last Modified on 3/18/2004

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The information in this article applies to:


 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange Server 2003 Standard Edition

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SUMMARY
In Microsoft Exchange Server 2003, gzip-encoded content is supported in Microsoft Internet Explorer 6 (or later) and Netscape Navigator 6 (or later).

When you enable forms-based authentication in Exchange Server 2003, you can also enable gzip compression for static and dynamic files in Exchange Server 2003 virtual directories and virtual servers. When you do so, users who sign in to Microsoft Outlook Web Access (OWA) receive an OWA sign-in page that stores their user credentials in a cookie. Users with Internet Explorer 6 (or later) or Netscape Navigator 6 (or later) can receive gzip-compressed content from the server.



Client
The client system must be running Microsoft Windows 2000 or later and must use one of the following Web browsers:
 * Internet Explorer 6.0 with KB 328970 (or later)
 * Netscape Navigator 6.0 or later

Server
Forms-based authentication must be enabled.

When you enable gzip compression in your Exchange environment, you must take into account the type of deployment scenario. The recommended approach is to deploy dedicated front-end servers. In this type of scenario, the following requirements apply:
 * The front-end Exchange 2003 server must be running under Microsoft Windows Server 2003.
 * The back-end Exchange 2003 servers may be running under either Windows 2000 or Windows Server 2003.

Another type of deployment scenario involves not deploying dedicated front-end Exchange servers (also known as a back-end only deployment). In this situation, the Exchange 2003 server must be running under Windows Server 2003.

Note If you use Exchange 2003 front-end servers to access Exchange 2000 back-end servers, disable OWA Compression support on the front-end servers until all back-end servers are upgraded to Exchange Server 2003.

Procedure
To enable forms-based authentication on the Exchange virtual server and virtual directories of an Exchange Server 2003 computer that is configured as either a front-end or a standalone server, follow these steps:
 * 1) Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
 * 2) Expand Servers, expand  , expand Protocols, and then expand HTTP.
 * 3) Right-click Exchange Virtual Server, and then click Properties.
 * 4) Click the Settings tab.
 * 5) Click to select the Enable Forms Based Authentication for Outlook Web Access check box.
 * 6) To configure compression, click the compression level that want to use in the Compression box, and then click OK.
 * 7) Click OK.
 * 8) Restart the following services:
 * 9) * Microsoft Exchange System Attendant service
 * 10) * IIS Admin Service

Note You must configure Secure Sockets Layer (SSL) in Microsoft Internet Information Services (IIS) before you can enable forms-based authentication on the server.

Additional query words: XCCC

Keywords: kbfix kbBug KB817319

Technology: kbExchangeSearch kbExchangeServ2003Ent kbExchangeServ2003Search kbExchangeServ2003St

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