Each administrator of the Microsoft Exchange Server had certainly met or will meet with a situation where you have to find a specific email in the mailboxes, and sometimes even remove it.
In Microsoft Exchange 2010 to search mailboxes, we can successfully use the Search-Mailbox command.
But first make sure that we can run the command Mailbox-Search and
New-MailboxImportRequest.
If you try to run the New-MailboxImportRequest and reveive the message:
“The term ‘New-MailboxImportRequest’ is not recognized as the name of a cmdlet”
This means that we do not have appropriate access rights.
Giving the appropriate permissions:
In Active Directory, create a universal security group such ExchangeImportExport_Allowed