Hi @Glenn Maxwell ,
- Display information about Specific Mailbox Forwarding settings:
Get-Mailbox ******@contoso.com | FL DeliverToMailboxAndForward,ForwardingAddress,ForwardingSmtpAddress
- Disable (remove) E-mail Forwarding option:
Set-Mailbox ******@contoso.com -ForwardingAddress(/-ForwardingsmtpAddress) $Null
- Forward all email sent to another mailbox:
Set-Mailbox -Identity "someone" -ForwardingAddress "******@contoso.com"
Forward all mail to an external email address:
Set-Mailbox -Identity "someone" -DeliverToMailboxAndForward $true -ForwardingSMTPAddress "******@contoso.com"
For reference: Set-Mailbox.
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