If you think you got spam from me — it wasn't me, honest!
It would appear that the folks at
belleclair.co.jp are running an open email relay (or have been compromised entirely). Some bright individual has been using it to send out massive volumes of spam and, for reasons known only to them, chose to put my return address on it. That has resulted in just short of 40,000 bounce messages landing in my inbox.
As a way to start your day, that just isn't as fun as it sounds.
A single notmuch command made the bounces go away; a couple of lines in header_checks has, so far, prevented the arrival of about 1,000 more. But spam with my email address on it, it seems, continues to flood the net.
Time to get serious about that DMARC setup in the hope that it might help, I guess. Email is so much fun.