In the past 24 hours I have been getting spam emails at a rate of one per minute on my non-ms email (if you just woke up, that's about 720 emails in 12 hours). Outlook junk filter was able to filter about 30% of them but the rest landed in my inbox.

In a reply to a support request I sent to my email ISP, I was told that "someone touched the exchange junk-mail filter settings". Joy!

I never knew just how many emails were blocked by that. Insane.