nanog mailing list archives

Re: surge in spam email (fwd)


From: Brad <brad () americanisp net>
Date: Wed, 9 Aug 2000 15:45:52 -0600 (MDT)


On Wed, 9 Aug 2000, Greg A. Woods wrote:


[ On Wednesday, August 9, 2000 at 11:08:02 (-0400), David Charlap wrote: ]
Subject: Re: surge in spam email (fwd)

Just keep in mind that your use of ORBS may result in blocking a large
amount of legitimate traffic as well as spam.

It's impossible to tell the difference between "legitimate" traffic and
unwanted traffic arriving from any mailer that's susceptible to theft of
service attacks, and if you want to block lots of spam then you have to
block all mail from such mailers.  This is also the quickest and most
effective way to really get the attention of the admins who control such
mailers too, and in doing so put some pressure on them to fix their
configurations!

An example of legitimate traffic is an email sent from me to
a friend at a different provider.
I am unable to send this "legitimate" email to friends at
other providers because my mail server has been listed in
ORBS "manual" entry database since the begining of the
year..  The reason: "DoS attack threats".

ORBS failed to mention in their manual entry list that our
mail server has never had open relays.  We do not block the
ORBS testers, and according to ORBS own records, our mail
server is secured, properly configured, and does not accept
any relay mail -and never has-.

ORBS has listed our mail server because some jackass not
associated with our company made a DoS attack threat to
-obviously- the wrong person.  Every attempt to contact ORBS
to find out who this person was, what their IP address was,
what they said, or any request for any information has gone
unanswered and ignored.

If you choose to use ORBS, you -will- block 
"legitimate" traffic, such as this email, from reaching
their intended destinations.

ORBS is a personal vendetta list (my $0.02 worth).
If anyone can give reason for my mail server being on the
ORBS list, I would be glad to entertain their findings.

Thanks,
Brad Baker
Director: Network Operations
Americanisp
brad () americanisp net
303-984-5700 x12

                                                      Greg A. Woods




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