Concern: Is having Outlook 2003 clients going to prevent me from deploying Exchange 2010

OVERALL STATUS: No, having Oulook 2003 clients is not a blocker. However, you need to understand the following sections and make configuration changes as applicable.

Back since November 9th, 2009 where Server 2010 released to manufacturing (RTM), there have been a growing concern around whether enterprises are prevented from upgrading or migrating their current or based messaging infrastructure to , if 2003 clients is used within the organization.

But in  this article includes are a few additional concerns about Exchange 2010 and Outlook 2003

Exchange 2010 lack support for UDP Notifications

Exchange 2010 Exchange Server name appears as Instance – <GUID>

Exchange 2010 & Outlook 2003 Offline Address Book (OAB)

Exchange 2010 RPC over HTTP Connectivity

Exchange 2010 Opening multiple shared calendars & additional mailboxes

Exchange 2010 RPC Encryption Requirement

Exchange 2010 Public Folder Database requirement

exchange 2010

Special Thanks to Henrik Walther

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