on 1/26/09 4:49 PM, Grant Taylor said:
I would be willing to bet that the spoofed member is really the source of the message. I would not be at all surprised if that members computer has malware on it that sent the email (after harvesting it from the address book) via the default email client and thus the list members ISP.
That may be typical in some cases, but I assure you that it is not the case for when someone else tried to spoof my e-mail address in posting their spam to this mailing list.
I think it would be worth asking the member to send an email to you (or reply to a request) and compare the headers. If the headers are almost identical, I'd ask them to run a virus and malware scanner on their computer. I'd ask even stronger if all the spam messages that came in came from that same system.
Even if they were infected with malware, those programs could easily use a different outbound route than the normal mail sent by that person. So, such a test might turn up something interesting, but then again it doesn't prove anything if it doesn't.
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