The information on this page is quite outdated, since I no longer deal with deploying and operating large-scale messaging systems and Exchange itself is no longer a mainstream product.
Microsoft‘s mail and collaboration plaftorm, which evolved from an X.400-like MTA into an SMTP-optimized behemoth with client-side MAPI, IMAP4, NNTP, POP3 and WebDAV support, and later into the full-blown SaaS known as Office 365.
Resources
- How Exchange’s Autodiscover Works With Mail.app
- Brutus, a library and proxy connector to access Exchange servers.
- PostPath supplies a MAPI transport to emulate Exchange-like functionality on UNIX servers
- MS Exchange Blog
- The Exchange Project – Syncing Exchange to iCal and back
- Slipstick Systems – simply the best Exchange and Outlook site you’ll ever find.
- Accessing an Exchange mailbox using WebDAV
- ASP.NET for WebDAV access.
Pseudo-Alternatives
- Grommunio, a full blown native reimplementation of most of the core protocols
- DAVMail, a combined POP/IMAP/SMTP/Caldav/Carddav/LDAP gateway between Exchange and open protocols.
- Zarafa, another company doing a clone stack.
- OpenChange, an attempt at re-implementing the necessary protocols in a portable fashion, supplying MAPI libraries, Wireshark dissectors, the works.