I once left 285 packages on a delivery notice at a dock for a business. And you bet, I still have it in the filing cabinet. BUt I did have them before I left them.
My experience with delivery notices began back when we had to get signatures on each and every delivery. (pre DR days)
I noticed that 90% of the deliveries went to 5% of the population of where I was delivering. I hated to bring packages back, sometimes 10 or more a day. And in many areas, trying to find a neighbor home was a lost cause and could cost you 10 minutes or more.
So what I did was when I caught the customer home, I would get them to sign several delivery notices for me, for future deliveries. I explained to them why, and everyone of them were happy with the situation.
My paid day went down, and I had less then 2 sendagains a day. So while it took a little time up front, it paid off very well long term.
Now, without the signature on the delivery notice, it is a dishonest act, and when the crap hits the fan, it will have a termination for those that follow his orders. Even if you taped the conversation, you would get fired, and he might get a slap on the wrist.