1Coat the ham with a mixture of honey, butter, and Dijon mustard.
2Place the ham in a smoker at 325°F for about 2 hours, uncovered.
3Prepare the glaze by simmering pineapple juice, grainy mustard, brown sugar, honey, and Cajun seasoning in a saucepan until it reduces by half and thickens.
4Brush the glaze onto the smoked ham.
5Return the ham to the smoker for another 15 minutes to caramelize.
6Let the ham rest before adding a second round of glaze.