Sep 23, 2020. Download headers only. If you have a slow network connection, you can use this option to improve performance. Only message headers are automatically downloaded to your computer. Therefore, large messages (and any attachments) are downloaded only if you select them in the message list. Cached Exchange Mode takes advantage of the ability of Outlook to automatically determine the speed of your connection to Exchange, and it optimizes data transmissions for that speed. When the On Slow Connections Download Headers Only setting is selected, Outlook stops automatically downloading full items and also leaves attachments on the server. Expand your Outlook. We've developed a suite of premium Outlook features for people with advanced email and calendar needs. A Microsoft 365 subscription offers an ad-free interface, custom domains, enhanced security options, the full desktop version of Office, and 1 TB of cloud storage.
Download Headers and then Full Items – first Outlook grabs all the message headers, then it downloads the rest of the content in each message. Depending on the speed of the connection, this gives you a chance to delete any messages (as headers) before the entire message is downloaded. Download Headers – only the message headers are.
Symptoms
Consider the following scenario:
In this scenario, the email folders for these mailboxes may show item counts that are lower than expected. Additionally, older items may seem to be missing, and you might receive the following message and hyperlink at the bottom of the list of items:
There are more items in this folder on the server
Advanced IMAP Account Settings For Outlook For Mac - Office ...
Click here to view more on Microsoft Exchange
This message is shown in the following screenshot.
Additionally, if you search for email items in your mailbox, the search results may display the following text at the bottom of the results:
Showing recent results...
More
If you click the More link, additional items that meet your search criteria are displayed in the search results. This occurs because Outlook retrieves the additional items from your mailbox on the server that's running Exchange Server.
Note
This behavior can also occur in the RSS Feeds folder in your Exchange mailbox. Also, only a subset of items may be synchronized in groups in Outlook 2016 or Outlook for Office 365.
Cause
This behavior occurs because the Cached Exchange mode Mail to keep offline setting is configured to a value other than All. For example, the following screenshot shows a profile that's configured to use Cached Exchange Mode and the Mail to keep offline setting is set to a default value of 12 months.
Note
Turn On Cached Exchange Mode - Outlook
Outlook 2019, Outlook 2016, Outlook 2013 and Outlook for Office 365 provide the options of 1, 3, 6, 12, or 24 months, or All. Outlook 2019, Outlook 2016, and Outlook for Office 365 provide the additional options of 3 days, 1 week, and 2 weeks.
In the default configuration, depending on the size of your hard disk, Outlook synchronizes only 1, 3, or 12 months of email to your Offline Outlook Data (.ost) file from the Exchange server.
If your Mail to keep offline setting is set to 12 months and you have email items in your Exchange mailbox that are older than 12 months, those items reside only in your mailbox on the server. Therefore, if you can't connect to the Exchange server, you may be unable to retrieve items outside the range that's specified by the Cached Exchange Mode synchronization setting until you reconnect with the server.
Note
This setting does not affect the number of items that are synchronized with folders of the following types:
Note
Groups folders only synchronize a maximum of 1 year. Mail to keep offline settings that are lower than 1 year are honored.
More Information
To reduce the effect of the Outlook offline data file (.ost), the default number of months that are configured for your profile varies by the size of your hard disk. The following table provides the different default values for different hard disk sizes.
If you have to change the number of selected months of email to synchronize with your cached mode '.ost' file, follow these steps:
Working Offline
If you don't have connectivity with the Exchange server, the following message is displayed in a folder if there are older items on the server that were not synchronized with your .ost file:
There are more items in this folder on the server
Connect to the server to view them
This message is shown in the following screenshot.
Under similar conditions, if you search for items in your mailbox and you don't have connectivity with the Exchange server, the following message is displayed below the search results:
Server unavailable. <x> months of results shown.
In this message, <x> represents the value that's configured for the cached mode Mail to keep offline setting.
An example of this message is shown in the following screenshot.
Feature Administration through Group Policy
The cached mode Mail to keep offline setting is maintained in the Outlook profile settings in the Windows registry. If you want to administer this setting by using Group Policy, you can use the Group Policy templates. These are available from the following Microsoft websites, depending on your version of Office:
Office 2016, Office 2019, or Outlook for Office 365: https://www.microsoft.com/en-us/download/details.aspx?id=49030
Office 2013: https://www.microsoft.com/download/details.aspx?id=35554
The Group Policy template files for Outlook 2016, Outlook 2019, and Outlook for Office 365 are Outlook16.admxand Outllk16.adml. The files for Outlook 2013 are Outlk15.admx and Outlk15.adml. If you use Group Policy to manage this setting, the following registry data is used by Outlook:
How To Set Outlook To Download Only E-mail Headers ...
Key: HKEY_CURRENT_USERSoftwarePoliciesMicrosoftOffice*x.0*OutlookCached Mode
DWORD: SyncWindowSetting
Value: integer value (Decimal) specifying the number of months (use only the following values)
0 = All (whole mailbox)
1 = 1 month of email items
3 = 3 months of email items
6 = 6 months of email items
12 = 12 months of email items
24 = 24 months of email items
Notes:
This provides an easy way to control large messages that arrive in your account. Rather than downloadingmessages that are larger than the specified limit, Outlook downloads only the headers. You can then markthe messages for download or deletion, or simply double-click the message to download and open it.
Note: This works only for POP3, not for IMAP protocol...
Follow these steps to specify a message size limit for an account:
1. On the Send / Receive tab, in the Send & Receivegroup, choose Send/Receive Groups:
2. In the Send/Receive Group list, choose Define Send/ReceiveGroups... (or press Ctrl+Alt+S):
3. Select a group to modify and click Edit....
4. From the Accounts bar, select the folder for which you want toset a message size limit and select this folder (check the Include the selected account in this group checkbox if needed):
5. Specify the criteria you want to use to limit message download basedon the following option list, and click OK:
Outlook 2011 I Don't Want To Download All Emails From ...
If you need to configure more advanced options or exercise a finer degree of control over the size limitcriteria, use Rules Wizard. The Rules Wizard allows you to create a custom large messagerule to suit your requirements.
Note: This works only for POP3, not for IMAP protocol:
See also this tip in French:Limitation de la taille du message entrant.
Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2020
Categories |