Anyone knows a way to create a retention policy for EXO Inactive mailboxes?
In the article section of "https://docs.microsoft.com/en-us/microsoft-365/compliance/inactive-mailboxes-in-office-365?view=o365-worldwide#inactive-mailboxes-and-microsoft-365-retention-policies" it specifies: You might consider creating a Microsoft 365 retention policy specifically for inactive mailboxes. Here are some reasons for doing this and things to keep in mind. You can configure the retention policy to retain mailbox content only as long as necessary to meet your organization's requirement for former employees. It's a good way to identify inactive mailboxes because the retention policy will only be applied to inactive mailboxes. You are able to quickly identify the retention policy that's assigned to inactive mailboxes in your organization. This makes it easier to change the retention (or deletion) settings if necessary. It will also make it easier to permanently delete an inactive mailbox because you can remove it from the policy by using the Microsoft 365 compliance center. Otherwise, you have to use Exchange Online PowerShell to remove a Litigation Hold from an inactive mailbox or use Security & Compliance Center PowerShell to exclude an inactive mailbox from an organization-wide Microsoft 365 retention policy. If you create a Microsoft 365 retention policy specifically for inactive mailboxes, you can add a maximum of 1,000 mailboxes to the policy. If you're a large organization, you might have to create more than one Microsoft 365 retention policy to use for inactive mailboxes. These are exactly what my organization wants. However, I wonder whether it is possible to create a retention policy targeting all the inactive mailboxes. If so, what are the process to create such a retention policy. This article did not provide any feasible way to create such a policy. Could anyone advise whether it is possible and how this retention policy can be created? In https://docs.microsoft.com/en-us/microsoft-365/compliance/create-retention-policies?view=o365worldwide#configuration-information-for-exchange-email-and-exchange-public-folders It mentions: When you apply the retention settings to All recipients, any inactive mailboxes are included. However, if you change this default and configure specific inclusions or exclusions, inactive mailboxes aren't supported and retention settings won't be applied or excluded for those mailboxes.