Re: faked return e-mail address discard
- 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
> 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