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>>I would also like to know if any of you
have a general magic bullet for all the PDF spam.
Here
we have the SPF turned on, the Friends Challenge system turned on,
custom-written local.rul & mfilter.rul's turned on, Normal and
custom-written RBLs... and those customers do not receive any of the .pdf
spams.
Certain business email addresses have the Friends
Challenge turned off... but the SPF turned on... and they too are not seeing any
of the .pdf spams.
However, there are certain business accounts that also
have SPF-Default set to Off... and they are receiving some .pdf spams, but not
many.
I would guess that the .pdf spam emails are hard to
separate from legit emails content-wise; that they are being eaten-up by the
other mechanisms. I haven't looked into the details why.
One thing that helps is that our g_max_bad_to is
set to 4. This is set in surgemail.ini directly.
The above should take care of the IP side of the house,
however maybe a Rule for such emails would be good too:
Netwin / ChrisP: Would it be possible for you to
write a new Aspam rule for the X-IP-Stats header if the IP is not known and the
email contains an attachment? Is there another way that the Admins can
block the .pdf spams?
Maybe I'm overlooking the obvious here.
BarryZ
1USA
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