Dealing with a creepy postman

I've spoke to my SO about this, but he hasn't offered much other than saying I should tell the postman to F off.

So ladies, what do you reckon?

More often than not, this particular postman does our round. EVERY SINGLE DAY, he'll ring the bell for me to answer the door, just to hand me post that could quite easily have gone in the box.... I think he's doing this just so he can see and talk to me. What should I do? I have to go and open the door, because sometimes I'm waiting for parcels that either won't fit in the box, or the postman doesn't feel comfortable leaving it outside (which I totally understand and appreciate).

So I'm torn on how I should move on from here. This had been going on for quite a while now 😔 and I don't feel comfortable about it.