Here is a spoofed email that appears to come from you and is digitally signed. Note that I signed up using another person's email address, another person's SSN, another person's phone number, chose your name as the password for the key, etc.

Both MS and Apple need a beating with a clue stick.

U:Apparently they got it... MS at least fixed this.

Jon Udell: How to forge an S/MIME signature