I'm struggling to find information about this and it's extremely interesting.

Would you please explain more?

It's hard to remember many details from almost 20 years ago, I just remember coming across it in email spools while writing anti-spam analysis scripts. Only mention I can find nowadays is https://www.experts-exchange.com/questions/22812691/What-is-....

I simultaneously don’t believe this and fully believe this is something they would do. Do you have any sources on this?

It's amazing how little information has survived: the only reference I can find right away is https://www.experts-exchange.com/questions/22812691/What-is-...

I was working in anti-spam at the time, so I was eyeballing a lot of raw email dumps and writing analysis scripts for "anomalous" urls, so it popped up fairly frequently.

The primary problem is we can't search through time via WayBack Machine where a lot of these things have gone. Took me a while the other day to surface the Choco-Banana Shake Hang which Microsoft deleted from their production site.

https://web.archive.org/web/20000608173453/http://support.mi...

There are a few archives of Microsoft KB articles. I found this article in Beta Archive wiki's, which has a full-text search. https://www.betaarchive.com/wiki/index.php?title=Microsoft_K...

This is good news. I fear for those poor souls struggling with their Blendolinis.

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?

The Master-Gender-Switch answer doesn't actually answer, it's just an external link that is now broken.

This is the archived version of that link: https://web.archive.org/web/20110204205739/http://www.people...

Ah I misremembered one thing, nothing broke because it wasn’t even an existing domain when they used it. That was a different Microsoft domain I was thinking of.