I just received an email delivery failure notification from my ISP for a message that I sent a few days ago. It raised a couple of questions about what personally identifiable information is normally sent to email recipients? I do know that all email are traceable back to the sender, at least in most cases, but in this notice it prefaced my email address with my actual name and the received from lines actually gave the name of my computer ahead of the portion identifying the ISP's email identification. I enabled all of the header lines in my email client and checked other emails that I received, and nothing like that was visible...at least not in any form that I understand. I prefer to pick and choose who knows my actual name when sending an email, and I don't feel that anyone needs to know the name of my computer. Since I do not remember ever being asked the name of my computer when setting up my internet or email service, I must assume that it is being collected automatically. What I want to know is whether this identification info is available to anyone that I send an email to, without going through channels to obtain it?