Well, the credit card statement says "SHOPPERS DRUG MART #09...", which is, right down to the individual letters, exactly what it says on my statement for charges on the other terminals in the same store. Upon calling Amex, they have always credited me the additional miles, thinking it was a mistake (I didn't tell them it was the postal outlet, and they couldn't tell any different from their systems). There is most definitely a different sales terminal that prints a receipt showing "Canada Post", but the credit card payment is processed separately through another terminal at the counter, and issues a second receipt showing "Shoppers Drug".