The history of content conversion in Exchange

The Exchange server and the client (that evolved into Outlook) were originally (circa 1992) based on the MAPI standard (stands for Messaging Application Programming Interface). Broadly this can be divided into the MAPI data model, and the MAPI object schema. Very simplistically, the MAPI data model can be summed as: message stores (think mailboxes) that…


How the M: Drive came about

In Exchange 2000, we introduced a new feature called IFS. IFS stands for “Installable File System”. This uses a little known and even less used feature of NT that allows the OS’s file system (like NTFS or FAT) to be replaced. The initial reason for doing that was as an optimization: it would allow protocols,…