Linux MAPI programming over ExchangeRPC
The OpenChange Project aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
Three main goals:
- provide a library for interoperability with Exchange protocols
- provide an alternative to Microsoft Exchange Server:
+ uses native Exchange protocols
+ provides exactly equivalent functionality when viewed from Microsoft Outlook clients
- develop a body of knowledge about the most popular groupware protocols in use commercially today
MAPI Overview
- MAPI is the glue between Exchange and Outlook
- Not a network protocol but a set of functions call interfaces developed by Microsoft before Microsoft Exchange existed
- ExchangeRPC:
+ Proprietary transport protocol for MAPI
+ Closely matches the MAPI calling interface
- 2 main protocols used in MAPI communications:
+ NSPI: Address Book protocol
+ EMSMDB: Exchange transport
…
Describing a MAPI conversation
Clientside:
- MAPI applications call MAPI providers, using the API to pass data
- MAPI providers pack the client or server MAPI information in a blob
- ExchangeRPC protocol is used to transport the MAPI information, using one of two MAPIspecific protocols:
+ EMSMDB Message Store Protocol
+ NSPI Address book Protocol
…
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Tags: ExchangeRPC, linux
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