Forum Discussion
Exchange System Mailboxes after migration to Exchange 365
ArjanBroekhuizen Hello, Arjan, I have read the recommendations from other users and have several insights to add. Before removing "extest," make sure it's not used for any specific tests. If it's not necessary, removing it can tidy up your on-premises setup.
Another recommendation - since your Exchange server is only a relay and has no user mailboxes, you might not need the "DiscoverySearchMailbox" if there's no eDiscovery requirement. Consider removing it for a cleaner setup. Check if your on-premises Exchange server serves any other purpose besides email relaying. If not, retiring it could simplify things and lower maintenance.
I'm sure that our server is only used as relay server. Besides the system mailboxes, the DiscoverySearcMailbox is the only mailbox on this server (extest is removed already).
When I remove the Discovery-mailbox, is there a possibility to re-create it if necessary?
Kind regards,
Arjan
Yes, it is possible to recreate the DiscoverySearchMailbox if necessary. The DiscoverySearchMailbox is a system mailbox in on-premises Exchange used for In-Place eDiscovery. If you remove it and later find the need to perform eDiscovery searches or if it's required for compliance reasons, you can recreate the DiscoverySearchMailbox.
To recreate the DiscoverySearchMailbox, you can use the New-MailboxSearch cmdlet in the Exchange Management Shell. Here's an example of the command:
New-MailboxSearch -Name "Discovery Search Mailbox" -InPlaceHoldEnabled $true -SourceMailboxes "email address removed for privacy reasons", "email address removed for privacy reasons" -StartDate "MM/DD/YYYY" -EndDate "MM/DD/YYYY"
Replace "email address removed for privacy reasons", "email address removed for privacy reasons" with the mailboxes you want to include in the search. Set the appropriate StartDate and EndDate for your search criteria.
Keep in mind that removing the DiscoverySearchMailbox means you'll lose any existing In-Place eDiscovery searches associated with it. Recreating it will start with a new mailbox and new searches.
Always ensure that you understand your organization's compliance and eDiscovery requirements before making such changes. If in doubt, consult with your IT or compliance team.
- Hi BarryGoblon,
Thanks for this information. I have decided to not remove this mailbox. It is a small mailbox so it takes not much diskspace.
Kind regars,
Arjan