Ediscovery Search Limits


Hi Everyone,


I have to run an eDiscovery Search across all 100k+ mailboxes with messages from a specific sender/ author AND with a specific Subject.


The issues is we have A3 licensing and we are limited to 10k mailboxes per search.


I have tried creating groups and importing a list of 10k users via CSV but my Powershell sessions either take FOREVER or times out.


Import-Csv -Path C:\StuGrp1.csv | foreach{Add-DistributionGroupMember -Identity StudentGroup1 -Member $_.Mail}


What other options to I have to run this type of search and bypass these limits?  From what I am given I don't really have any options to limit my scope by anything else.


I also tired to search one month at a time but that still searches across 100k+ mailboxes.


Thanks for any help!




1 Reply
There's no limit to the number of mailboxes you can search, there are limits to export/purge: https://docs.microsoft.com/en-us/microsoft-365/compliance/limits-for-content-search?view=o365-worldw...