Microsoft has released Exchange Server 2003 Service Pack 2 (SP2) with security enhancements and "push" mobile e-mail support.
SP2 offers mailbox enhancements and better protection against spam, Microsoft said.
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In addition, it includes technology to allow e-mails to be sent directly from Exchange to Windows Mobile-based devices, without users having to dial up to receive them.
With this technology, SP2 allows Microsoft to compete head on with Research in Motion, whose Blackberry Connect mail server technology allows users to do the same thing.
To use the push technology, mobile devices need to have the Windows Mobile 5.0 Messaging and Security Feature Pack. The first devices with this software pre-installed are not expected to hit the market until early 2006. Devices from Palm and Motorola will be among the first to use the pre-installed software.
Users who want to use the software before then can download it onto devices themselves from next month, said Microsoft.