OWA Premium has the look and feel of Microsoft Outlook and uses extensions that are only available in Microsoft Internet Explorer. As such, OWA Extension is not supported on browsers such as Firefox or Netscape navigator.

For Microsoft Exchange Server 2007, OWA 2007 Premium is required to retrieve tombstoned messages with OWA Extension.

For Microsoft Exchange Server 2003, HP also strongly recommends the use of OWA Premium.

Dependencies

The OWA Extension application depends on the .NET framework 2.0 libraries. It also depends on the Exchange 2007 library Microsoft.Exchange.Data.Common.dll.

ISA Server Support

Microsoft Internet and Security Acceleration (ISA) Server 2006 and Exchange Server 2007 were developed to co-exist and provide an increased level of security for a customer’s messaging environment. HP EAsE 2.1.x now supports networks using ISA Server 2006, which provides enhanced security for OWA Extension and other client applications accessed over the Internet. The default ISA Server configuration supports OWA 2007 and OWA Extension. No special configuration is required.

Pre-installation Requirement for Known Issue (Exchange 2007 & Windows Server 2008)

AutoDiscovery is used by OWA Extension to “discover” or find on which mailbox server the user’s mailbox resides, and to get information where Exchange Web Service (EWS) is hosted.

There is a known issue with the AutoDiscover Service under EAsE 2.1 OWA Extension installations for Exchange 2007 when installed on Windows Server 2008. Before installing OWA Extension on Exchange 2007 with Windows Server 2008, modify the registry key as documented on page 31 of the Email Archiving software for Exchange 2.1 Installation Guide in the “Installing and configuring HP OWA Extension” section:

http://spock.corp.hp.com/utility/document.aspx?docurl=Shared%20Documents/internal_docume nts/sw/ilm/rim_ease_2.1_IG_2009_05_13.pdf

IMPORTANT NOTE:

This is not an issue with Exchange 2007 installed on Windows Server 2003.

Pre-installation Considerations

The following sections describe information you need to know or consider prior to installing OWA Extension on Exchange 2007.

OWA Extension Core Components

•IIS Virtual Directory – OWA Extension components reside in a virtual directory named “PERSISTMailItem”. This virtual directory points to the location:

<Drive>:\Program Files\Microsoft\Exchange

Server\ClientAccess\Owa\forms\PERSISTMailItem

•ASPX pages – Pages which act as the custom forms; these are stored inside the above virtual directory.

7