ActiveSync Default Policy

Exchange 2007 RTM would allow you to assign ActiveSync policies on a per user level.  Exchange 2007 SP1 added the ability to define an ActiveSync policy as a default policy for all users.  You can read more about this and other changes to ActiveSync in SP1 on the “[1] What’s New for Exchange ActiveSync Mailbox Policies in Exchange Server 2007 SP1?” post on the Exchange team blog.

However, if your environment does not utilize ActiveSync policies you should be aware that the default policy will be applied to all users after upgrading to SP1.  The default policy is pretty vanilla and would not really impose any configuration changes on mobile devices.  However, users will be prompted to apply required security settings before syncing.  The following Exchange Management Shell command can be used to prevent the default policy from being applied to all users, thus preventing the prompt on mobile phones.

Set-ActiveSyncMailboxPolicy Default -IsDefaultPolicy:$false

**Note: Each time a CAS server is upgraded this policy will be re-enabled as the default.

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