Exchange Online Mailbox Retention

Jimhex2024 240 Reputation points
2024-12-20T00:20:16.6166667+00:00

To utilize EXO for SEC Regulation and Purview eDiscovery.   I think we need to have some kind of 7 years retention.

  1. What is the best way to accomplish this?  MRM, Compliance Policy, Preservation lock, some kind hold policy, litigation hold ?   So deleted items are not deleted and Primary mailbox will expand to Archive up to 1.5 TB.  EX: under Data lifecycle management, create a 7 years retention policy for EXO, and other services.  Would this be sufficient?
  2. For mailbox reaching 1.5TB with retention in place, how would I move mailbox data to secondary mailbox and allow users to access both.
  3. If a leaver mailbox is delete after 30 days, will the retention keep the data for purview searches?
Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,655 questions
{count} votes

1 answer

Sort by: Most helpful
  1. Bruce Jing-MSFT 7,250 Reputation points Microsoft Vendor
    2024-12-20T09:40:04.4333333+00:00

    Hi,@Jimhex2024

    Thanks for posting your question in the Microsoft Q&A forum.

    Based on your description, I will answer your questions in turn:

    1.If you want EXO content to be retained for 7 years, it is recommended that you create a new MRM policy in EXO.You can refer to this link for details:https://zcusa.951200.xyz/en-us/exchange/security-and-compliance/messaging-records-management/create-a-retention-policy

    User's image

    2.Exchange Online Archiving provides auto-expanding archiving for additional storage space in archive mailboxes up to 1.5 TB. Once the primary mailbox reaches its limit, users can still archive older messages to this auto-expandable space and access the data seamlessly.

    3.When an employee leaves and their mailbox is deleted after 30 days, a retention policy that includes deletion protection will ensure that the data is preserved. The information will be retained for the duration specified in the policy, and Purview eDiscovery can search through this retained data even if the mailbox is not active.


    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

    0 comments No comments

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.