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Removing on-hold items from Exchange and SharePoint: unsupported but doable

The usual reason for placing a mailbox on hold is to retain its contents for some legal or regulatory purpose. However, the situation might arise when it is necessary to remove some items from a mailbox that is on hold. For instance, someone might successfully sue your company to demand the removal of all information pertaining to them or some particular activity. If ordered to permanently remove the material, there is little you can do but comply.

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