I am using a hosted MS Exchange server. It works well, but I am having a problem with the email "disappearing". Here's the setup:
If I send a message to the email address of the Exchange account, it is visable on Outlook Web Access. However, as soon as I open the desktop version of Outlook, it takes the email from the inbox of the Exchange account and moves it into the inbox of the "Personal Folder" on that computer. Therefore, it is no longer visable to those using Web Access.
I am sure there is a setting to control this behavior, but I don't know where it is.