Explanation/Reference:
Explanation:
The SenderIDStatus is 'Fail'. However, the email was still delivered due.
Use the Set-SenderIdConfig cmdlet to modify the configuration of the Sender ID agent. The
SpoofedDomainAction parameter specifies the action that the Sender ID agent takes on the message
when the sender domain shows evidence of being spoofed. The SpoofedDomainAction parameter takes
the following values: StampStatus, Reject or Delete. The default value is StampStatus.
We need to change the value of the SpoofedDomainAction parameter to Delete.
References:
https://docs.microsoft.com/en-us/powershell/module/exchange/antispam-antimalware/set-senderidconfig?
view=exchange-ps