To my way of thinking, extending the deleted item retention period of all mailboxes in a tenant is something that should be done immediately and using the above PowerShell commands it is really easy to do. If you wish to retain deleted email data beyond the maximum 30 days that can be provisioned generally you’ll need to add the legal hold service to the mailbox and ENABLE it! The legal hold service is available on Exchange Online Plan 2 mailboxes, E3 and E5 suites typically. After 30 days however, the deleted data will still be purged and unrecoverable. They have all been extended to the maximum of 30 days, which should make everyone much happier and provide you the ability to recovered deleted email data out to the maximum period of 30 days for ALL plans. But Exchange Online only keeps permanently deleted. Now when you re-examine all the deletion period for all mailboxes you should see: The Office 365 suite has basic functionality for recovery, so its helpful if youve recently deleted a file. To extend this to the maximum of 30 days for ALL plans, execute the following command: Then to view the current retention periods run the following:Īs you can see from the above, all the mailboxes listed are currently only set to a MAXIMUM of 14 days for retention (which is the default). To do this you firstly need to connect to Exchange Online using PowerShell. You will also note that you can extend this to a maximum of 30 days using PowerShell, which is exactly what you should do IMMEDIATLY you add a user account I would suggest. Use the Exchange Management Shell, as shown above, to change this setting, to increase the period up to a maximum of 30 days.” An Exchange Online mailbox keeps deleted items for 14 days, by default. “How long deleted items are kept in the Deletions folder depends on the deleted item retention period that is set for the mailbox. Yes, I said ALL Exchange Online plans, and I quote: Deleted mailbox recovery The Office 365 support. Many people are unaware of the fact that ALL (yes, I said ALL) Exchange Online plans are configured by default, to ONLY retain deleted items for 14 days. Users can recover items from the Recoverable Items folder using the Recover Deleted Items feature in Outlook or the Outlook Web App.
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