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[Migrated from MSDN Exchange Dev] Emails disappear after 7 days in inbox

Lydia Zhou - MSFT 2,376 Reputation points Microsoft Employee
2020-11-09T06:24:58.78+00:00

Note: This case is migrated from MSDN Exchange Server Development forum. Since Exchange Server Development forum mainly discuss issues about Exchange development, and non-developer Exchange has transitioned to Microsoft Q&A for support, we migrated this non-developer question manually to continue the discussion.

Original Post: https://social.msdn.microsoft.com/Forums/office/en-US/f18b49b4-319f-4db0-b08f-0d7b5d47c367/emails-disappear-after-7-days-in-inbox?forum=exchangesvrdevelopment

Emails that arrived to our inbox over 7 days ago are disappearing. This is happening in a shared inbox with 10 users. Emails are not in the deleted folder or archived anywhere. We have several rules to route our desired emails to separate folders within this inbox, but all 10 users have noticed that emails vanish even in these folders. I've checked the auto archive settings and these are not enabled. I am running out of ideas! Dont know what is causing the emails to evaporate but we need them back :(

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Lydia Zhou - MSFT 2,376 Reputation points Microsoft Employee
    2020-11-09T06:28:52.517+00:00

    What's the detailed version of your Exchange server?
    Does this Inbox belong to a user mailbox, or other types of mailbox?
    How do these users add and check the shared Inbox folder?
    When does this issue begin? Did you make any modification before this issue?

    Try to use the following command to search the missing message, and you can copy the search result to another mailbox: 

    Search-Mailbox -Identity <mailbox name> -SearchQuery {Subject:"<message subject>" AND From:<user name>} -TargetMailbox <mailbox name> -TargetFolder <folder name> -LogLevel Suppress

    The SearchQuery parameter specifies a search string or a query formatted using KQL. For more information about KQL in Exchange, see Message properties and search operators for In-Place eDiscovery.

    Please also check if any retention tag or retention policy is applied to the mailbox and folder: 

    Get-Mailbox <mailbox name> | Select Name, RetentionPolicy

    If the response is helpful, please click "Accept Answer" and upvote it.
    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.

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