tens of Delivery Status Notification

[Wazoo]

sorry, but I continue to not see the

IP:151.33.237.92

nowhere in all messages.

You have provided two Tracking URLs in this Topic. Both of those contain the embedded e-mail header lines of;

Received: from ppp-24-243.33-151.iol.it (151.33.243.24) by cp-out12.libero.it (8.5.016.1)

As Farelf states, Don mentions this IP Address in his continuation .. but the IP Address initially chosen by Don is not available in any data you have provided here. Whether that means it's a typo, snagged from something else, it's hard to say. The easiest thought is that you have in fact submitted at least one spam/notification that did have that IP Address included, but perhaps it was only one of a hundred????