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Re: faked return e-mail address discard

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  • David DeFranco
    Huh, just found Noel s excellent response in my gmail Spam folder. Sorry for the duplicate response. On Mon, Feb 22, 2010 at 6:21 PM, David DeFranco
    Message 1 of 4 , Feb 22, 2010
      Huh, just found Noel's excellent response in my gmail Spam folder.
      Sorry for the duplicate response.



      On Mon, Feb 22, 2010 at 6:21 PM, David DeFranco
      <david.defranco@...> wrote:
      > It's called Backscatter, and yes, it's a pain.
      >
      > Try this: http://www.postfix.org/BACKSCATTER_README.html
      >
      >
      >
      > On Mon, Feb 22, 2010 at 11:59 AM, Cameron Camp
      > <cameron@...> wrote:
      >> Forgive me if this has been asked (or point me thusly):
      >>
      >> My postfix box is getting e-mails where dirtbagspammer@...
      >> sends to someothercrapaddress@... and uses a valid e-mail
      >> address on my server for the return, so I get a non-delivery e-mail from
      >> the someothercrapaddress@... mail server to the client
      >> (virtual hosted) on my server. How can I block clients on my box from
      >> getting these e-mails or discard these automatically, will postfix do
      >> this? Apparently the spammers just got a valid e-mail my client had
      >> somewhere like on a website and just used it as a return address for the
      >> spam operation, or are there other scenarios that would likely cause
      >> this? My box isn't blacklisted, has the right RDNS, and isn't
      >> open-relaying.
      >>
      >> Best,
      >> Cameron
      >>
      >>
      >
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