Ask HN: Could spam lists be improved with consideration of domain age?
Dear HN,<p>due to some successful phishing attempts at my scientific research organization with over 2k personnel, we&#x27;ve been blacklisted by Microsoft, which causes valid e-mails to their domains being rejected. This is a substantial problem, because it prevents a lot of scientists (and administration) from being able to efficiently communicate over the mailing-lists, and the like.<p>Our ticket system is still been flooded about this and although it is not my responsibility, I wanted to ask: why is it so easy for a three-letter domain, that&#x27;s been online since the dawn of the Internet to get blacklisted so easily? Even a simple WHOIS request yields a &quot;Changed&quot; record stating 2017. Is the rejection list based on IPs? Is there anything preventing the usage of a more differentiating algorythm?<p>The respective requests to fix the problem have been sent, but it&#x27;s been at least a week already and the havoc is real.<p>Please feel free to share your thoughts. Thank you!