When you synchronize a mobile device by using ActiveSync, for example, full items are downloaded in Outlook, and the synchronization process is less efficient than it is during regular Outlook synchronization to users' computers.
The Download only headers setting for synchronization is designed for Outlook users who have dial-up connections or cellular wireless connections, to minimize network traffic when there is a slow or expensive connection. For a scenario where users' actual data throughput is slow, even though their network adapters report a fast connection, you can disable automatic switching to downloading only headers by using the Group Policy option, Disallow On Slow Connections Only Download Headers.
Similarly, there might be connections that Outlook has determined are slow but which provide high data throughput to users. In this case, you can also disable automatic switching to downloading only headers. When an Outlook account is configured to use Cached Exchange Mode, there's always a local copy of a user's Exchange mailbox ready in an offline data file.
By default, the. When the user is online, the cached mailbox and OAB are periodically updated from Exchange Server in the background. Any email messages the user drafted while offline are automatically sent when that user is back online. If a user upgrades from an earlier version of Outlook to Outlook and you previously configured Outlook for Cached Exchange Mode, those old Cached Exchange Mode settings are automatically applied, including a new synchronization control for shared mailboxes.
The default location for new. As an administrator, you can configure a different. If you do not specify a different. The Mail to keep offline slider in the Server Settings dialog box in Outlook has been updated to apply to shared folders and lets you set a smaller synchronization window, available by default with Cached Exchange Mode in Outlook The slider allows an Outlook user to limit the email messages that are locally synchronized in a Microsoft Outlook data file.
By default, if Cached Exchange Mode is enabled, Outlook caches email messages only from the last 12 months and removes anything older from the local cache for the PC. These default settings depend on the device, with mobile devices having smaller default settings.
The email messages that are removed from the local cache are still available for users to view, but they'll need to be connected to Exchange Server to view them. Users can view messages that were removed from the local cache by scrolling to the end of a message list in a folder and clicking the message Click here to view more on Microsoft Exchange. Users can also change how much email to keep offline. You, the administrator, can change the default age or enforce the age of email messages that are removed from the local cache.
Remember that customizing Cached Exchange Mode settings is optional. In the Account Name column, click the account you want to configure, and click Modify to display the Exchange Settings dialog box. By default, Cached Exchange Mode is disabled. Right-click the policy object that you want, and click Edit. The Group Policy Management Editor window opens. In the Default location for OST files text box, enter the default location for.
For example:. You can define a new default location for both Personal Microsoft Outlook data files. The following table shows some settings that you can configure for Cached Exchange Mode.
The following table shows some additional settings that you can configure for Exchange connectivity. Planning considerations for deploying Outlook for Windows. Check the Include the selected account in this group checkbox to see all the options:. Select a folder from the list of folders in the Folder Options section and then choose the option Download headers only.
It is possible to have different setting for each folder in an account, so, for example, you could set Outlook to download only headers in a folder that you know gets a large volume of emails.
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