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| backscatter (A bounced mail or a Delivery Status Notifications (DSN) for mail with a forged "Sender" field in the P1 header, that was never sent from addresses in the addressee's organization) | |||
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| backscatter (A bounced mail or a Delivery Status Notifications (DSN) for mail with a forged "Sender" field in the P1 header, that was never sent from addresses in the addressee's organization) | |||
