IT and the Legal team recently started working on correcting several key issues. One of those included the ability to keep company email from auto forwarding out to other non-company accounts/companies/etc.

Open a powershell prompt (run as administrator)
$LiveCred = Get-Credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $LiveCred -Authentication Basic -AllowRedirection
Import-PSSession $Session
foreach ($i in (Get-Mailbox -ResultSize unlimited)) { Get-InboxRule -Mailbox $i.DistinguishedName | where {$_.ForwardTo} | fl MailboxOwnerID,Name,ForwardTo >> c:\text\Forward_Rule_list.txt }

If you receive an error “Files cannot be loaded because running scripts is disabled on this system”
Set-ExecutionPolicy RemoteSigned