Forcing all clients to use Cached Mode can prevent
performance issues because the desktop applications work against the local machine copy.
Get-Mailbox | Set-CASMailbox -MAPIBlockOutlookNonCachedMode $true
Behind the scenes the cmdlet is setting the protocolSettings property on the user ??™ s Active Directory
account. There are a number of tools that can be used to see properties on Active Directory objects.
Figure 6 - 1 shows the protocolSettings property using ADSIEdit. ADSIEdit is included in the
Windows Server 2003 support tools, located on the installation CD in the Support\Tools\Suptools
.msi.LDP , another directory browsing tool, is also installed with the support tools.
Part II: Working with Server Roles
166
Figure 6-1
Disabling Outlook Versions
In addition to blocking protocols, it is also possible to block specific versions of Outlook. An organization
may choose to block versions based on support, features, or security. Restrictions can be a single client
version, a range of versions, an open - ended range, or any combination separated by commas.
Restrictions are also configured per - user.
Following are some examples of blocking all versions before Outlook 2007, blocking Outlook 2003 RTM
through Outlook 2003 Service Pack 2, Outlook 2002 RTM and Outlook 2007 RTM, and finally removing
any restrictions:
Get-Mailbox | Set-CASMailbox -MAPIBlockOutlookVersions ???-12.
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