I am in the UK and have received a spam email titled "Now I'm so tight in the crotch area" purporting to be from my own mac email address! It appears to have a link to a web page and at the bottom is the address:- TBDPDAXXKV Company, 946 BHCDMJSP Street, P/O BOX 4453 USA. Does anyone have advice as to what I should do about this and is it likely that the security of my mac been compromised? I normally bounce spam but if I do I assume that it will come back to me! I have now bounced it and "firstname.lastname@example.org" says "Returned mail: User unknown" and in the header it says "Diagnostic-Code: SMTP;550 5.1.1 unknown or illegal alias"