office365: forward NDRs to shared mailbox



what i've done so far (did not work)


Set-TransportConfig -ExternalPostmasterAddress <EmailAddress>

Would set it to a shared mailbox address and assign rights to it from your helpdesk/support mailbox for visibility.

You can also set it to $null and not receive any NDRs which is the default setting

Set-TransportConfig -ExternalPostmasterAddress $null

this did not work either:

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