Preheat smoker to 105C (225F)
Season salmon with salt, pepper, and rub, if using
Once the smoker reaches 105C (225F), put the salmon
Check the salmon temperature periodically
When it reaches 38C (100F), glaze the salmon (optional)
When it reaches 52C (125F) you can remove the salmon and let it rest for 5 minutes (it should finish cooking)
The salmon is fully cooked when it reaches 63C (145F)