spam from <preview@***> where the *** part changes each time

Receiving email (and spam) has nothing to do with the geographical place where you are.

The explanation is that there was a period of about a week or so, when all these "preview@" and "renew@" spam stopped. The spammers are now coming back full vengeance, altering the sender email ever so slightly to pass through Outlook's spam filter again.

You must have traveled during that week.

Those prefix names are apparently no longer used by spammers but as you wrote, there are new ones. They appear to be 1 or 1 letters off and not consistently the same

Once they are consistently the same I hope Microsoft addresses those emails. I live in USA but I am frequently in Spain and I got lots of spam emails there.

All my preview and renew@emails have disappeared but now have them coming from different domains but same subjects. I got 50 yesterday. I am in U.K. but when I was in Spain a week ago I got very few of these junk emails.

I have noticed an improvement also. Oddly though some of my regular emails are now going into my junk email folder, but this is better then all those other emails that I did not want.

I agree; finally "renew@" and "preview@" appear to have gone away. Maybe our complaints were heard after all.