Honey & Spice Glazed Smoked Ham (smoker version)

1 cooked spiral ham (boneless or bone-in, 3 to 5 kg)
2 tbsp mustard (Dijon or mild)
100 g brown sugar
3 tbsp honey or maple syrup
1 tbsp cider vinegar or orange juice
1/2 tsp cinnamon (optional)
1/2 tsp sweet chili or paprika
Freshly ground black pepper
Preparation (in a smoker or barbecue):