I'm going with A) Invalid IP address. That's got to be the easiest way to spot a forged Received: header. Unless it's a really clever hacker, of course.
I think the correct answer is C) Invalid Subject line. The Received: header is all about the mail delivery path, so the subject line shouldn't be a clue for forgery.
Kris
4 months agoRebbecca
4 months agoDetra
4 months agoWeldon
4 months agoLizette
3 months agoFranklyn
3 months agoNicholle
3 months agoCecilia
4 months agoNa
4 months agoKattie
4 months agoSylvie
4 months agoErnie
3 months agoLili
3 months agoEliseo
4 months agoJuan
4 months agoNatalya
5 months agoTawna
4 months agoTawna
4 months agoMerilyn
5 months agoSalena
5 months agoAlishia
4 months agoDaren
4 months agoEveline
4 months agoDean
5 months ago