When you want to adjust the Maximum Attachement Size in Exchange 2007, you can use this script to check where the size limits are set.

The only Message Size limit that is not set through Powershell, is the one for Outlook Web Access. This is done through the web.config file on the Client Access Server.

• First make a backup of the web.config file (default location c:\Program Files\Microsoft\ExchangeServer\ClientAccess\Owa).
• Open the file with Notepad
• Change the line <httpRuntime maxRequestLength=”30000″ />
  Where 30000 is the maximum message size (in kilobytes)
• Save the file (nothing else needs to be done)

Sometimes users come to you and say…I’ve got an attachement which is blocked by OWA. It says :

Outlook Web Access has blocked access to attachments. Blocked attachments: file.jpg, otherfile.otherextension.

When you need to configure (include or exclude) these Read more »

I found an article which clearly describes the usage of Outlook Web Access (OWA) in a mixed environment with Exchange 2000, 2003 and/or 2007.

Article : Technet Article Outlook Web Access and Exchange 2007, Exchange 2003, and Exchange 2000 Coexistence

The following error occurs:

Event id: 64
Event Source: MSExchange OWA
Description: Failed to read and update the Outlook Web Access configuration settings. Virtual directory: “Virtual_Directory_Name”. Web site: “Web_Site_Name”. Error message: “Error_Message”

This error indicates that Microsoft Outlook Web Access did not read and update its configuration settings from the Active Directory directory service for the Outlook Web Access virtual directory and Internet Information Services (IIS) Web site specified in the event description.

On the Client Access Server which Read more »