I don't think this is infected machines, this is what they do. I'm trying to figure out what triggered it, guessing no one else pays attention to that kind of crap. The fun of having your own email domain, I guess.
I quit that kind of fun 10+ years ago. Managing email servers is a terrible and mind destroying chore. It's just not worth doing any longer. I have too little sanity left for it.
(post is archived)