Is there such a thing as software or a script that can return suspicious e-mails to their point of origin that would make them look like they were undelivered? I get the impression that much Spam is sent on spec and that both opening or deleting them merely confirms an address to be valid. (Personally I think it is the Spammers themselves who need to be deleted.) Some of these people are very evil. I had one recently that tried to get my credit card details. The return address appeared to be accounting at PayPal.com but PayPal claimed it was a 'spoof'. Definitely people that I don't want to have my address. Are there other ways of making my Mac and my addresses more invisible? Tony