On Wed, Aug 13, 2014 at 6:19 PM, Timothy Murphy <gayleard at alice.it> wrote: > >> That was back when it was safe to assume that those one or more >> destination wanted to receive anything that showed up on port 25. Or >> that you could reasonably accept the unwanted data and subsequently >> send it back to wherever the From: line said it came from. Which was >> basically never but people used to do it before they knew better. > > But it is still reasonably easy to say what you want to do with email, > even if it is hard to implement. No, it is next to impossible to describe what is spam and fairly difficult with viruses. And you have to categorize it before you can do something with it. > My statement was that "the TASK of postfix is fairly easy to understand". Sure, as long as you don't need to make any choices... > You are clutching at straws. > > "Whatever can be said can be said clearly" - Wittgenstein 'Clearly' isn't a problem. 'Concisely' would be a problem for anything that permits more or less arbitrary choices. -- Les Mikesell lesmikesell at gmail.com