I had kiddie pornographers spoof me twice in the past. It is extremely annoying. You’ll soon be receiving hate mail from those who actually received the spam saying things like “you are sick” and “I hope you go to prison and die!”
If you are lucky, the spammer is careless and has left a trail to follow - either through the email header information, or the site in the spam email. Do a “whois” on both and you may find an administrative contact. I was able to send a “cease and desist” the first time it happened to me. The company was out of the UK and promptly moved on to a less technical savvy victim.
The second time they were very good. Multiple proxies and they had used identity theft to set up their kiddie porn site. The poor woman I called in Kansas was in tears that her identity had been stolen for this purpose. I wasn’t the first to call her.
In both cases, I contacted the FBI with the email header information.
Good luck!
I still had two of the messages in my spam box so I went ahead and opened them since it appears they are legitimate failure to deliver messages. There is is a lot of info there in the header but I’m not really sure how to read it. It looks like they are being sent from France. At least the subjects were “normal” spam-some arthritis cure and a zinc supplement-no kiddie porn.