On Mon, 6 Jun 2005, Kern Sibbald wrote:
I don't see the difference, unless I am mistaken, in both cases the
message goes back to the same place.
The difference is that the reject/failure message is sent by the SMTP
_ORIGIN_ host, not the receiving one.
Oh that is interesting. I had never thought about it much, but it is rather
obvious now that you point out the difference.
Yes....
However, this brings up an interesting point. One thing that annoys me is
sites that receive email forged with my address. They then decide that the
email is not valid (some content they filter or something like that), and
they then send me an email (i.e. they are in a sense mirroring their own
received spam to me).
This is outscatter spam.
There are two things that annoy me: 1. they often strip the headers so I
cannot even know how is forging my email address. 2. they bounce the mail to
me even though my IP address is not the same as the originating address.
That's because you're forged as MAIL FROM:<> - email is fundamentally
inscecure.
SPF records might help a little. they did in my case.
AB
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