Find Users Who Have Forwarding Set In Exchange 2010

At every place I've worked, when employees leave the company, their mail gets forwarded to their supervisors (generally for a set amount of time) so someone else can continue working on incomplete projects. The problem is; some admins forget to set a calendar reminder to end the forwarding and the messages start filling up the supervisor's mailbox.

Luckily, with PowerShell, you can easily export a CSV list of all users with forwarding set.
I prefer to have it in a CSV because it's generally easier to read than the PowerShell output, and if you have a ton of users in the list, PS will truncate it.

Fire up the Exchange Management Shell and run this command:

Get-Mailbox -resultsize Unlimited | Where {$_.ForwardingAddress -ne $null} | Select Name, ForwardingAddress, organizationalunit, whencreated, whenchanged, DeliverToMailboxAndForward | export-csv c:\Users_With_Forwarding.csv -NoTypeInformation

Now you should have a nicely formatted list (with Creation Date and to whom the messages get forwarded to) which you can use to verify if forwarding needs to be disabled!