Why there are don't have index mail items

gihyun Park 65 Reputation points


there are mails that do not have index in most archive, what is the reason?

Is the only way to re-assign the index the only way is to move the DB?

I saw in the MS document that the command does not work.


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. Kael Yao-MSFT 37,491 Reputation points Microsoft Vendor

    Hi @gihyun Park

    What Exchange server version are you using?

    If you are using Exchange 2016 or before, you can rebuild index for the database following the guide in this documentation:

    Reseed the content index catalog if there is only one copy of the mailbox database

    If you are using Exchange 2019, the index is stored in each mailbox.

    You can rebuild the index by migrating the mailbox to another database.

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