> Postfix has much more functionality out of the box so the comparison isn't really fair. But that's kind of the point. 20 years worth of feature accumulation

> Postfix has much more functionality out of the box so the comparison isn't really fair. But that's kind of the point. 20 years worth of feature accumulation is 20 years worth of additional attack surface, which is a liability if all you need is what qmail does.