I hope this is the right forum. Recently I received a bunch (4-6 over 2 days) of "returned" undeliverable e-mails from a variety of servers. They all contained the same, vile e-mail that I did not send. I spoke to my ISP CSR- he did not know what the issue was. I spoke to a friend, who assured me it was backscattering and told me not to worry. I found this on the web: "If your inbox is full of those Delivery Failure Notification messages then you are likely seeing backscatter. Check the email headers and if the header nearest the bottom is not your server, then it is definitely backscatter." I checked the header, and this was the case. I e-mailed my ISP to advise them of this apparent backscattering, and this was their reply: "It is more likely that your email could be spoofed and a virus is sending out messages as originating from your email account. You may wish to run an antivirus scan at your earliest convenience. I recommend simply deleted the bouncebank emails." My question is: Is my ISP simply wrong? Is there any chance my e-mail address could be blacklisted? I now have a MacBook pro and a router, and considering my ISP's track record, I find their answer lacking in credibility. Can anyone ease my anxiety? Thank you.