Verwijder specifieke email uit Exchange 2016 mailbox
Uit WaaaghPedia
https://www.ntweekly.com/2016/02/22/delete-a-specific-email-from-all-mailboxes-exchange-server-2016/
https://www.codetwo.com/admins-blog/search-mailbox-exchange-2013-2016-online-attributes/
Get-Mailbox -resultsize unlimited | Search-Mailbox -SearchQuery "Subject:Virus" -DeleteContent
Get-Mailbox -resultsize unlimited | Search-Mailbox -SearchQuery "from:email@example.com" -DeleteContent
