Microsoft is changing how the removal of an Office 365 retention policy affects the data held in the SharePoint Online Preservation Hold Library. Instead of an immediate purge, data will be kept for a period to allow administrators to recover it. Sounds like a good idea and it should help people rescue a situation when someone removes a retention policy in error. That is, if they notice that the policy is no longer in effect for a site.
Exchange Online supports inactive mailboxes as a way to keep mailbox data online after Office 365 accounts are removed. Inactive mailboxes are available as long as a hold exists on them. You can update mailbox properties to exclude all or some org-wide holds. If you exclude holds from a mailbox, you run the risk that Exchange will permanently remove the mailbox. If that’s what you want, all is well, but if it’s not, then you might not be so happy.
If you’re interested in deploying backups for SharePoint Online, you might be doing so to prevent data loss through accidental user deletion. However, Office 365 retention labels and policies can help prevent accidental deletion too. And the best thing is that retention policies and labels are part of Office 365 E3, so you don’t have to pay more to get protection.
The Exchange Online Managed Folder Assistant (MFA) runs in the background on a workcycle basis to make sure that mailboxes are processed at least once a week. Most of the processing involves mailbox and Office 365 retention policies and runs smoothly, but how do you know what MFA has done?