It is
possible to enable and disable access to these features per - mailbox with the Set-CASMailbox cmdlet.
For example, to enable or disable all users the ability to use IMAP4 for email access, set the
ImapEnabled parameter. This can be useful to prevent non - MAPI clients, like Outlook Express or
Entourage, access for a specific user:
Get-Mailbox | Set-CASMailbox -imapenabled:$true
Get-Mailbox | Set-CASMailbox -imapenabled:$false
To change a specific user, pass the SMTP address, alias, UPN, DN, or GUID in the Identity parameter:
Set-CASMailbox -Identity Jeffrey@exchangeexchange.com -PopEnabled:$false
The numerous Set-CASMailbox parameters give granular control to administrators for customizing the
user experience.
Disabling Outlook Modes
Exchange Server 2007 provides the ability to lock down the versions and modes that the Outlook client
can connect with. This is a great way to provide extra security to the network by preventing access to
older or non - patched clients.
In addition, it is now possible to control which modes can be used to connect. For example, you can
prevent access of clients using Cached Mode or Outlook Anywhere. This is useful in environments where
desktop search applications are installed. Non - Cached Mode clients can generate a significant amount of
disk I/O traffic and affect the performance of the server.
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