Exchange 2010 CAS Role

Posted on 2011-09-09
Medium Priority
Last Modified: 2012-08-13
When Accessing mailbox using MAPI client [Outlook] or sending email using MAPI client [Outlook], I wonder if Outlook needs first to go through CAS Role or straight to Mailbox server role .

Question by:jskfan
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stefor earned 664 total points
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In Exchange 2007 and 2010 you need the Client Access Role to access the mailbox. You will also need the Hub transport role to send e-mails.

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Akhater earned 1336 total points
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in Exchange 2007 MAPI connections will be to the mailbox server, in exchange 2010 MAPI connections are done to the CAS servers.

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ID: 36512300
Microsoft Link I posted above, talks about the client that goes through CAS server, I have not see MAPI client (Outlook). it looks like it is used as the old Front End Server.
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Akhater earned 1336 total points
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Again in exchange 2010 ALL CLIENTS access is through the CAS including MAPI (exception is the public folder access), it is now a complete 3 tiers technology.

In exchange 2007 MAPI clients will connect to the Mailbox server directly all other clients to the cas (like the old FE server)

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