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This is a very common error. It usually means something has been done to the IIS configuration - for example reconfigured to remove the need for the /exchange virtual directory. <br />
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Simon.<br />
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If your question has been answered, please remember to accept the answer and close the question. 
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This is a very common error. It usually means something has been done to the IIS configuration - for example reconfigured to remove the need for the /exchange virtual directory.

Simon.

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If your question has been answered, please remember to accept the answer and close the question.

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As far as I know IIS configuration has not been changed, any guidance on where I can look to find the source of the problem?
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As far as I know IIS configuration has not been changed, any guidance on where I can look to find the source of the problem?

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When using Outlook Mobile Access on SBS2003 r2 I get a error saying the mailbox's are stored on a older version of exchange and not exchange 2003 which it clear is? Any thoughts?
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When using Outlook Mobile Access on SBS2003 r2 I get a error saying the mailbox's are stored on a older version of exchange and not exchange 2003 which it clear is? Any thoughts?

Outlook Mobile Access problem on SBS2003 r2

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).