SAUCE also won't work for large businesses which don't care about who sends them mail from mis-configured systems, only about whether the content is legit business comm or not.
I do think peer-review and bait/trap email addresses will become more and more useful. However, they're an example of how we're becoming buried under load to the point where we have to pool resources just to fight UCE. SAUCE is an example of going to a solution only steps away from whitelisting (and more resource intensive), showing a willingness to drop legit content because of bad packaging. That's a sign that SMTP mail as we know it is becoming less useful. And of course nothing even close to "everyone" is going to be using it. Sadly, I've had no fewer than 5 people talk to me about abandoning well-established email addresses just this week, because of UCE overload. It's not Armageddon, but it's certainly getting "expensive" in terms of time and materials to filter even at the 90% level. And that 10% is over 100 a day for some well-known users.
no subject
I do think peer-review and bait/trap email addresses will become more and more useful. However, they're an example of how we're becoming buried under load to the point where we have to pool resources just to fight UCE. SAUCE is an example of going to a solution only steps away from whitelisting (and more resource intensive), showing a willingness to drop legit content because of bad packaging. That's a sign that SMTP mail as we know it is becoming less useful. And of course nothing even close to "everyone" is going to be using it. Sadly, I've had no fewer than 5 people talk to me about abandoning well-established email addresses just this week, because of UCE overload. It's not Armageddon, but it's certainly getting "expensive" in terms of time and materials to filter even at the 90% level. And that 10% is over 100 a day for some well-known users.