Outlook uses MAPI (the messaging API) over RPC (remote procedure calls). Here are some good starting points. You will probably need the Exchange SDK to do very much with MAPI.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/e2k3/e2 k3/_exch2k3_mapi_access.asp http://msdn.microsoft.com/library/default.asp?url=/library/en-us/e2k3/e2 k3/_techsel_tech_13.asp Or just go to msdn.microsoft.com and search for MAPI and Exchange. Jim -----Original Message----- From: Qiang Peng [mailto:[EMAIL PROTECTED] Posted At: Monday, November 17, 2003 11:53 PM Posted To: Exchange Technical Mailing List Conversation: Protocol for communication between Outlook and Exchange Server Subject: Protocol for communication between Outlook and Exchange Server Hi all, I want to program a client application that use services from Exchange Server (a client application with functions like Outlook). Anyone can tell me which protocols I must implement to achieve these features. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=& lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]

