Another day another dead blacklist

FADE IN
EMAILGEEKS.SLACK.COM #email-deliverability
It is morning in the channel. The regular crowd is around discussing the usual.
JK, smart, competent head of deliverability at an ESP asks: Anyone familiar with SECTOOR EXITNODES listings and have insight into what’s going on if listed?
ME: Uh, that’s the Tor Exit Nodes list. They think your IP is used by Tor. That’s all sorts of weird. Let me do some digging.
5 minutes of google searches, various dig commands and a visit to the now non-existent sectoor.de website show that the sectoor.de domain expired and is now parked.
ME (back in channel): It looks like the blacklist domain expired and is now parked. So they’re listing the world and nothing to worry about. Not your problem, and not anything you can fix.
JK: Like a UCEProtect fiasco – not just us but everyone?
ME: No, more like the spamcannibal fiasco. The domain expired and so it’s listing the world.
ME: The world would be a better place without MXToolbox worrying about every stupid blocklist. Or even if they would follow the blocklist RFC check for expired domains before panicking the world.
SCENE
 

What does mitigation really mean?
Whitelisting is dead

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