To open a shared calendar in OWA 2007 you must have "full mailbox rights" granted by the administrator.  Click on your mailbox name on the upper right of the OWA window in Internet Explorer.  A... >> MORE INFORMATION

OWA 2007 provides the option to pre-configure the Default Domain in the Exchange Management Console (EMC) so users do not need to enter it.  With this configuration, users only need to enter the... >> MORE INFORMATION

Outlook Web Access users who access their mail on Vista clients get a Red X in the compose message form body.   To resolve this issue, apply the below Microsoft updates on the Exchange server/s: KB... >> MORE INFORMATION

The Exchange Forms Based Authentication login page settings are contained in the logon.asp page.  The steps below describe how to remove the Public and Private options from the OWA login page.  The... >> MORE INFORMATION

Delegate access to shared calendars is assigned using the desktop version of Microsoft Outlook.  To assign delegate access, select Tool\Option from the top menu in Outlook and move to the Delegate... >> MORE INFORMATION

Using Exchange Management Shell, OWA access can quickly be enabled or disabled for users.  To enable OWA access for a specific user type: Set-CASMailbox -Id user@domain.com OWAenabled -$true To... >> MORE INFORMATION

Based on a Microsoft knowledgebase article, there are several causes for receiving a HTTP 500 Internal Server Error. Some situations in which you might receive the error message are as follows: You... >> MORE INFORMATION

A lot of companies use Microsoft OWA or ISA Forms-based authentication (FBA) to login to OWA which provides users with two options, "This is a public or shared computer" and "This is a private... >> MORE INFORMATION

Update available: Updated procedure to rename Exchange single label domains Installing Exchange 2007 in an environment containing single-label domain names is not supported by Microsoft.... >> MORE INFORMATION

To set up OWA to accept UPN login names, the Exchange, Exchweb/bin and Public virtual directories must be configured to use Basic Authentication and the default domain must be configured to be... >> MORE INFORMATION

Summary: The article points out 11 timesaving features available in Outlook and Outlook Web Access.  These features discussed include:

1. Hotkeys
2. Using = in front of an email address alias automatically resolves the name in the address bar
3. Drag and drop can be used to file messages into mailbox folders
4. With S/MIME installed you can drag and drop images, documents or messages into the message attachments
5. The type-down feature can be used to find messages in any mailbox folder
6. View multiple calendars by holding down the CTRL key and clicking on the days you want to see
7. Use OWA basic to browse your Inbox more quickly
8. Holding down the CTRL key and clicking on multiple column headings lets you sort multiple columns at once
9. Enable spell check before sending
10. Get a nicely formatted agenda view using the following URL: https://<servername>/exchange/<alias>/calendar/?cmd=contents&part=1
11. Double click on a time in the calendar to bring up a new appointment form

To view the full article, go to http://msexchangeteam.com/archive/2005/10/27/413172.aspx

Summary: Many companies who have Microsoft Exchange with the update Q911829 (released in March and April, 2006) installed and are using Outlook Web Access have been experiencing a problem addressing messages. In some environments, when the spacebar is pressed after addressing a message the address dialog box re-appears and in some cases, while typing the message body, entering a space suddenly activates the addressing dialog box.
Upon hearing about this problem from Exchange administrators who were concerned about the productivity of their users, Messageware researched the problem, found the cause, and has released a free fix. This patch is now available to companies and Exchange administrators who are running any version of Exchange or OWA. It can be downloaded at http://www.messageware.com/downloads/fixQ911829.php.

Summary: This article discusses the configuration options available when using the Set-OwaVirtualDirectory cmdlet.  The cmdlet offers 77 configuration options some of which are available through the Exchange Management Console and some of which are only available through the Exchange Management Shell.
 

http://windowsitpro.com/article/articleid/97757/setting-client-access-server-and-owa-options.html

Summary: The article outlines the most common authentication methods and certificate consideration as well as steps to troubleshoot the 6 most common ISA Server issues (summary below).

Scenario 1: Users are re-prompted for authentication after entering username and password on the ISA FBA logon page.
Resolution: Verify that FBA is only enabled on the CAS or ISA Server.

Scenario 2: Users receive the error “Target Principle name is incorrect” after entering credentials on the FBA form.
Resolution: Verify the certificate name, the CAS name referenced on the ISA rule, and make sure the ISA server can resolve the CAS FQDN to an IP.

Scenario 3: Typing in the OWA URL without using /owa gives “403 Access Forbidden” error
Resolution: The ISA paths only allow for access to OWA with /owa.  Either update the allowed paths or use /owa in the URL.

Scenario 4: After logging into OWA users receive a “404 Not Found” error and ISA logs show a “Failed connection attempt” error
Resolution: Make sure that the ISA server can resolve the CAS FQDN to an IP, use telnet to connect to the FQDN and check if you get a response, and enable logging.

If you see a “Failed connection attempt” error in the ISA logs, also check for connection issues between ISA and the CAS such as closed or restricted ports, do a network trace, and check the IIS logs to see if the connection was received.

Scenario 5: Users get a “10061 Connection Refused” error after logging into OWA.
Resolution: Make sure that the port on the Bridging tab used by ISA to connect to Exchange matches the port configured on the OWA website in IIS.  In this scenario, the ISA logs will show a “Failed connection attempt” error.

Scenario 6: When connecting to OWA via ISA users can login but all the buttons are disabled on a new message form.  The issue does not occur when connecting to the Exchange Server directly.
Resolution: Verify if you have other 3rd party ISAPI filters on the OWA website.

To access the full article, go to http://blogs.technet.com/isablog/archive/2008/04/29/troubleshooting-owa-2007-publishing-rules-on-isa-server-2006.aspx

Summary: This article provides a low-level overview of what is new in Exchange 2007 including a feature summary. In Exchange 2007, the main focus is on security, mobility, and efficiency.
 http://technet.microsoft.com/en-us/exchange/bb736128.aspx

Summary: Microsoft’s article outlines the top 10 reasons to upgrade to Exchange 2007 from a business perspective.
http://www.microsoft.com/exchange/evaluation/topreasons.mspx

Summary: This article steps though the benefits of installing the S/MIME control on a client machine. The S/MIME control adds drag-and-drop message and attachment capability, enables users to read and send encrypted messages.
http://www.petri.co.il/smime_benefits_in_owa_2003.htm

Summary: The top 10 user and administrator features in Exchange 2007 are outlined in the article by InfoWord.
http://www.infoworld.com/article/06/08/07/32FEexchange10_1.html?s=feature

Summary: July 19, 2007, Toronto, Canada – Microsoft Office Outlook Web Access (OWA) is the corporate web mail solution of choice for the overwhelming majority of companies today and most of these companies secure their OWA environment with a Microsoft Internet Security & Acceleration (ISA) firewall server. A new white paper released today by Messageware (www.messageware.com), the world's leading provider of enterprise productivity and security solutions for Microsoft Office Outlook Web Access, highlights often overlooked security risks for organizations running OWA with ISA Server. In addition, it offers effective solutions for securing OWA against those risks.
Download the white paper at http://messageware.com/OWA-white-papers/white_papers.php.

Summary: This article walks step by step through the process of securing OWA 2000 using SSL. Includes helpful screenshots and links to more articles on OWA 2000.
http://www.msexchange.org/tutorials/MF004.html