Some cretin has set up a spam system to send emails to a vast number of people with the return address as *@transterrestrial.com.

While I was up at the cape, I got over two hundred emails to the effect that: so and so is out of the office, such and such a spamfilter blocked this email, etc.

All with return addresses of random names from my domain. I can’t imagine that they’re originating from my machine, since I don’t even use that domain myself for outgoing email.

Question. Other than blocking all incoming email to *@transterrestrial.com other than simberg@transterrestrial.com, what do I do about this, if anything? There’s certainly nothing I can do to prevent a third party from sending out email with a return address with my domain, though if there was, torching their genitals would be too good for them.