doug campbell <Doug(_dot_)Campbell(_at_)craniumpro(_dot_)com> wrote:
Challenge-Response requests: A company with the moniker
"spamarrest.com" has sold a few challenge-response systems, and each
such targeted system has duly e-mailed my server a challenge for
each spam message. I'm trying to make up my mind if I should spend
a few hours responding to the challenges (thus making life miserable
for "spamarrest.com" -- after all, it was THEY who contacted ME
first) or if I just should leave well enough alone.
If you have the time, I'd respond.
More importantly, I'd report every challenge as spam (to NANAS at
least).
Spam Bounces: There is an anti-spam boundary appliance called a
Barracuda, and there are apparently a lot of Barracudas swimming
around on the Internet -- many Barracuda systems attacked by the
spammers also dutifully sent my server an e-mail telling it that my
spam had been stopped by the appliance (only it wasn't my spam, of
course). I've cruised the Barracuda site and they call this
situation "backscatter" and offer suggestions on configuring the
appliance not to do it; sadly, each appliance comes configured by
default to do "backscatter". The technical suggestions seem on the
order of closing the barn door after the cows have escaped.
Likewise, report all of those as spam. You might want to escalate by
telephone to the owners of the companies using them, warning them to
stop their participation in the DDOS attack against your network.
Seth
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