Explaining Exchange 2003 Http Access (Parts 1 and 2)

 

http://www.msexchange.org/tutorials/Exchange-2003-Http-Access-Part1.html

http://www.msexchange.org/tutorials/Exchange-2003-Http-Access-Part2.html

"Outlook Web Access, Outlook Mobile Access and Exchange ActiveSync all use HTTP methods to access Exchange 2003. This article describes the mechanisms behind these features and explains why the features can sometimes be so awkward to configure."