Rob Wurster wrote:
To Whom It May Concern,
I am new to this so I will make it brief. The problem concerns spam
relay databases currently operating on the web. I find no problem
with their intended purpose but I do have a problem with some abuses
that are occurring by an organization known as SORBS (i.e.,
dnsbl.sorbs.net.) We have been put into their database and delisted
on numerous instances based on the fact that our router was
hijacked over one year ago as a spam relay. Granted we were in error
but the problem has been fixed. However, as stated above, we continue
to become listed in their database. This apparently is from residual
effects from the initial listing.
Conclusively, I find a need to help them rid their servers of
redundant and erroneous listings. How this is possible I do not know
but would like to share my experience and make the problem known.
Thank you for your time,
I don't think there is really a problem with these lists, for a start
one shouldn't land up in them. I feel the fault may lie more with people
who are so trusting of these black lists that they simply deffer all
messages completely rather than tagging them.
My question to add to that though, is the method these black lists are
using to collect their information - is it by spam that is actually
received via these relays? Surely its possible to forge headers. Also,
do they check post delivery when looking for open relays? If a server
accepts a mail (and does not return a relay denied error), does not mean
that it actually delivered the message (even if this is a bad way to run
things). Some black listing services border on abuse - Yandex to name
one, we have had to have firewalled by our upstream many times because
their proxy checker results in a massive port scan storm (which they deny).
Should there be some policy set down on the behavior of black lists (or
is there already?).
Regards,
--
Colin Alston <colin(_at_)slipgate(_dot_)za(_dot_)net>
Network Operations
Slipgate Team
http://www.slipgate.za.net/
Desk no. +27 031 2615410
Cell no. +27 072 4665153
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