unindexed items in ediscovery search


I just did an ediscovery search of just mailboxes and it came back with 

Last run on: 3/14/2018 11:04 AM
0 items, 0 B
26,557 unindexed items, 46.72 GB
3791 mailboxes    
0 sites
0 public folders
Am I to understand that the 26,557 unindexed items are encrypted or password protected attachments?
1 Reply
best response confirmed by Jason Benway (Contributor)

Might be other reasons as well, including server-side issues (mailbox not indexed or partially indexed). There's a detailed article on Unindexed items here:


26k unindexed items across 3791 mailboxes seems pretty normal to me, that's what, 8 items per mailbox on average?