“Sync Issue” messages, especially “Conflicts”, can pile up in Exchange mailboxes when Outlook is used. There is a server-side method of handling this:
- In the Exchange console, under Organization Configuration, under Mailbox,
- Create a Retention Policy Tag, tag type Sync Issues, age limit 3 days. Set Action to Take as Permanently Delete.
- Create a Retention Policy using the above Tag. Add any or all involved mailboxes, to it.
If a user sees an error message pertaining, run this in the Exchange command prompt:
set-mailbox username -RulesQuota:256KB
The default is reportedly 64K.
By default, in Exchange and Outlook versions after 2003, everything is always done in Unicode mode, with unlimited maximum mailbox/PST/OST size, not counting higher-level server quotas and the like. However, after migrations, older settings may remain, and mailbox size maximums will often eventually crop up because users which existed before migrations may still be in non-Unicode mode, which incurs a hard max on their mailbox size.
The best solution this writer has found, is in Group Policy:
One does have to install the Outlook ADM template into Group Policy.
Go to the Exchange console, under Organization Configuration, Hub Transport, properties of the item(s) in the Remote Domains list, Message Format tab. Choose “Never Use” under “Exchange rich-text format”.
Here’s where and how to set this:
1. Find the proper MLCFG32.CPL . This is the control panel icon for Outlook mail configuration. It will be somewhere under Program Files.
2. Determine its path in short (8×3) form. This can be done using DIR /X. It usually starts with C:\PROGRA~1. It varies according to OS and version of Outlook. If you have more than one version of Outlook present, remove one, run the repair on the other, and then do this. An example of a valid path for one XP box:
3. In RegEdit, go here: HKEY_CURRENT_USER\Control Panel\MMCPL
4. Create or open a registry string key called mlcfg32.cpl. Put the 8×3 path for this file as the value for the string key.
5. Open the control panel, and it’s there. It may not be in alphabetical order until you sort it manually.
In Windows 7:
In Windows XP:
C:\Documents and Settings\USERNAME\Local Settings\Application Data\Microsoft\Outlook
it removes duplicate emails in Outlook, and does a very good job of it too.