Support for Outlook 2000 was dropped with Exchange 2007, Exchange 2010 only supports Outlook 2003 (post SP2). In the diagram below you can see this server is performing public folder AND web based distribution, this is probably because you ticked this box when you installed the product.
Make sure the OAB you are looking at, has been updated from the GAL. If using Outlook, query the GAL directly, or download the latest OAB. Before you do anything send the user you created a ‘Test Email’ from your own account. The Mailbox SHOULD be in the right hand window (Providing you are in the correct administrative group, on the correct server, and in the correct mailbox store! Remember with Exchange 2007 / 2010 you create the mailbox with the Exchange system Manager anyway! On the Exchange Server, Start Ensure “Hide From Exchange Address Lists” is NOT ticked.
– In Outlook versions 2007,2010,20, users allow to type any specified display name, email address and password and Outlook users will try to configure their account automatically.
If this fails, users still select to configure it manually with the provided information by ISP or admin.
To fix Exchange Outlook OAB not updating issue, So that user able to opt a manual method.
In the following section, we are going to discuss how to resolve such issues.
Step 4: In last, follow on-screen details to configure users profile.