I am so glad you have found your answers and I think that's great. Mabey we can meet up at Dayton sometime. 73 !
Some of us have a lot of tools at our fingertips. I like having email headers, Even if email and IP addresses are spoofed, They can be identified. Keep up the good work.
If I don't want to receive any more E Mail from someone or a spammer, then I always put the Block option to use on my Yahoo account. What valuable info do you intend to see from someone malicious? Be done with them for good! After they see they are no longer getting anywhere with sending you e mail they will lose interest. No harassment anymore if you deny them entry...
Just an FYI. Not sure if this is the appropriate place for this, but a forum search for the email address brought me here. Yesterday I received an email from "Ham Watch <qrzwatcher@gmail.com>" about items I have for sale. There was no name, or call sign included - so I asked them to identify thermselves. No response as of yet. 73 Jim, WQ2H