Software companies that provide alternatives to Microsoft Exchange, cautiously welcomed at CeBIT last week the recent publication of application programming interfaces for Microsoft volume server products, but have found gaps already in what has been released.

Zarafa Chief Executive Brian Joseph--having ported, as he put it, "all the Exchange features to the Linux platform with full MAPI (messaging application programming interface) implementation"-- said there are significant gaps in the Microsoft documentation released to date. Zarafa makes an e-mail server that is compatible with Outlook.

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Microsoft, Exchange Server, API, Documentation