This story is ludicrous… yet, it seems to check out. https://spamassassin.apache.org/full/3.0.x/dist/rules/25_uri... says this is one of the "Top 125 domains whitelisted by SURBL", and there's an answer on the hyphen site about it: https://www.experts-exchange.com/questions/22812691/What-is-.... Can someone with a Bottom-Surgery account tell us the details?