Outlook 2010 Sync Issues and Conflicts when Blackberry server available

–While troubleshooting this issue i observed some e-mails in conflicts folder under outlook 2010

Cause :
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–The issue happens because the user opens the message in Outlook before BES delivers it to their Blackberry.  Then the message gets delivered to their mobile and thus the properties of the message on the server are changed before the user changes them with Outlook.

–Research the web and found following Blackberry forum

http://btsc.webapps.blackberry.com/btsc/search.do?cmd=displayKC&docType=kc&externalId=KB19222

–As per this blackberry forums ,This is by design of Cached Exchange Mode in Microsoft Outlook. When a new email message arrives at the mailbox, Microsoft Outlook is notified before the BlackBerry Enterprise Server. When the BlackBerry Enterprise Server accesses the email message, it modifies properties such as injecting a RefID.

–A possible workaround is to enable the ProcessMailDelay registry key to cause the BlackBerry Enterprise Server to wait for a period of time before picking up the email message.

Resolution :
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–To fix the sync issues, We have two options,

1) Disabled Cached Exchange Mode on user machine and see if that helps.

OR

2) On the Blackberry server follow the above blackberry forum and enable the “ProcessMailDelay” registry key to cause the BlackBerry Enterprise Server to wait for a period of time before picking up the email message.(This registry needs to be change from server so get this enable from your end)

Ref Article :

http://social.technet.microsoft.com/Forums/en-US/exchangesvrclients/thread/687c2ce6-22a7-46d2-a17c-0d256f55c0b6/

http://btsc.webapps.blackberry.com/btsc/search.do?cmd=displayKC&docType=kc&externalId=KB19222

Hope this post helps to resolve Sync Issues and Conflicts.