Exchange Q&A: Exchange Administration (10)

1.What is discovery mailboxes?

After we create an In-Place eDiscovery search, we can copy the search results to a target mailbox, a discovery mailbox is a special type of mailbox that provides the following functionality:

  • Easier and secure target mailbox selection;
  • Large mailbox storage quota;
  • More secure by default;
  • Email delivery disabled.

2.How many of storage quota does discovery mailbox have?

50 GB, and can’t be increased.

3.What are the functionality that discovery mailbox provides?

  • Easier and secure target mailbox selection;
  • Large mailbox storage quota;
  • More secure by default;
  • Email delivery disabled.

4.What role we can assign it as Full Access permissions to access messages copied to a discovery mailbox?

A discovery manager.

5.What is SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}?

It is a system mailbox to hold In-Place eDiscovery metadata. If this mailbox is removed or corrupted, the discovery managers are unable to perform eDiscovery searches until we re-create the mailbox.

6. What should be aware of when using the same search for both In-Place eDiscovery and In-Place Hold?

  • We can’t use the option to place a hold on all mailboxes in our organization. We must select the mailboxes or distribution groups. However, we can place all public folders in our organization on hold;
  • We can’t remove an In-Place eDiscovery search if the search is also used for In-Place Hold. We must first disable the In-Place Hold option in a search and then remove the search.

7.How to make a mailbox unuseable but do not disable or remove the mailbox?

  • Disable the Active Directory user account using Active Directory Users & Computers or other Active Directory or account provisioning tools or scripts. This prevents mailbox logon using the associated user account (IMPORTANT: Users with Full Access mailbox permission will still be able to access the mailbox. To prevent access by others, we must remove their Full Access permission from the mailbox);
  • Set the message size limit for messages that can be sent from or received by the mailbox user to a very low value, 1 KB for example. This prevents delivery of new mail to and from the mailbox;
  • Configure delivery restrictions for the mailbox so nobody can send messages to it.

8.What factors that can affect the consistency of search results?

  • The continual indexing of incoming email because Exchange Search continuously crawls and indexes our organization’s mailbox databases and transport pipeline;
  • Deletion of email by users or automated processes;
  • Bulk importing large amounts of email, which takes time to index.

9.What’s the custom management scopes used for?

We can use a custom management scope to let specific people or groups use In-Place eDiscovery to search a subset of mailboxes in your Exchange Server organization.

10.What are the relationship between In-Place eDiscovery and Exchange Search?

In-Place eDiscovery uses the content indexes created by Exchange Search.

Still have questions? Click here to view Microsoft’s official documentation on Exchange.

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