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What happens when you try and access the site via the IP address. Possible DNS config error ? Also are you using ISA server or anything ?
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What happens when you try and access the site via the IP address. Possible DNS config error ? Also are you using ISA server or anything ?

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I am not sure at what point this happened, but all of a sudden OWA 2003 is inaccessible from the internal network (on which it is hosted) but it is accessible from the Internet through the firewall. As a matter of fact, the entire default web site (SBS 2003) is inaccessible in this fashion internally but can be accessed from the Internet.<br />
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Any ideas?
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I am not sure at what point this happened, but all of a sudden OWA 2003 is inaccessible from the internal network (on which it is hosted) but it is accessible from the Internet through the firewall. As a matter of fact, the entire default web site (SBS 2003) is inaccessible in this fashion internally but can be accessed from the Internet.

Any ideas?

OWA access works externally but not internally?

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.