Recover Deleted Item on Client by New Process
Today I would like to share with you a small change about Exchange 2016 CU6, which has some impact on the usage habits of the client. Users may feel a little confused, the change is about the client-side recovery has been deleted.
In versions prior to Exchange 2010 to Exchange 2016 CU6, the user usually put the message into DeletedItems Folder after the message was Soft Deleted, the user deleted the message in Deleted item Folder again, or the message in DeletedItems Folder exceeded the DeletedItemsRetention limit, and then the message was moved from DeletedItem Folder to Recover DeletedItems Folder.
Users will also directly Hard Deleted the mail, and the mail will go directly to the Recover Deleted Items Folder.
When a user wants to recover a message from Recover Deleted Items Folder, the recovered message is moved to Deleted Items Folder.
In Exchange 2016 CU1, Mapi Property introduced an attribute LastActiveParentEntryID (LAPEID), but this attribute is not really applied until CU6. This attribute is the last Folder ID that the user records the mail stored before it is deleted. When the user recovers the mail from the Recover Deleted Items Folder, the recovered mail will not be moved to Deleted Items Folder, but will be directly restored to the folder before it was deleted according to LAPEID.
This improvement may cause some problems for users, and the recovered mail may not be found when operating in the new version after the user is used to the previous mode of operation.
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