Final answer:
In Powershell, you can use the a. Get-MailboxStatistics cmdlet to get information about mailboxes including the number of mailboxes created or deleted over a specified period of time.
Step-by-step explanation:
In Powershell, you can use the Get-MailboxStatistics cmdlet to get information about mailboxes in Exchange Server. By specifying a start date using the -StartDate parameter, you can filter the results to include only mailboxes created or deleted over a specified period of time.
For example:
Get-MailboxStatistics -StartDate '01/01/2022' | Measure-Object
This command will return the number of mailboxes created or deleted since January 1, 2022.
There is no direct cmdlet or parameter specifically for tracking mailbox deletions, but by using the Search-MailboxAuditLog cmdlet with the -Action parameter set to 'MailboxDeleted', you can search the mailbox audit log for mailbox deletion events.
Lastly, the Remove-Mailbox cmdlet is used to permanently delete mailboxes in Exchange Server. It does not provide information about the number of mailboxes deleted over time.