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Exchange Team Blog
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All you need to know about automatic email forwarding in Exchange Online

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The_Exchange_Team
Icon for Microsoft rankMicrosoft
Jan 19, 2021
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Updated Dec 08, 2023
Version 10.0
exchange online
security
Tips 'n Tricks
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molislaegers's avatar
molislaegers
Brass Contributor
Mar 31, 2021

You can find all mailboxes with forwarding setup with this powershell command:

 

Get-Mailbox -ResultSize Unlimited | Where {($_.ForwardingAddress -ne $Null) -or ($_.ForwardingsmtpAddress -ne $Null)} | Select Name, ForwardingAddress,ForwardingsmtpAddress, DeliverToMailboxAndForward