Hvad laver "DAVEX" på en Exchange 2000 server?

To improve performance, Microsoft has eliminated the OWA 5.5 ASP scripts and replaced them with a DLL that handles communications between the IIS server and the Exchange server. This DLL is called davex.dll on a back-end server and exprox.dll on a front-end server. Davex.dll consists of components that handle Get and Post requests as well as a dynamic renderer, a rendering engine, a template renderer, and a template cache.

http://www.winnetmag.com/MicrosoftExchangeOutlook/Article/ArticleID/20324/20324.html