Security Basics mailing list archives

Re: Spoof, Spam & Blacklist


From: Arman <arman () cybersecurity org my>
Date: Sat, 9 Feb 2008 13:45:13 +0800

Hi,

There is an options at yahoo..
you can request to release your domain or ip from yahoo blacklist by giving 
your domain registration..
I've done it once..
but already forgot where did I put the document..

On Friday 08 February 2008 23:50:58 J. Lion wrote:
That is what we thought as well. However company DEF is waaaaay bigger
than ABC, and trying to talk with the right group is almost
impossible.

Does anyone have any experience with getting your company off
blacklist example Yahoo - who or how to get in contact with the right
group?

On Feb 7, 2008 4:42 PM, AJ <heuristix () gmail com> wrote:
The onus here is on Company DEF. If they do not understand that spam
can be (and very often is) sent from spoofed addresses, that's the
primary problem.

If this blacklist is DEF's company blacklist you don't have any
options other than trying to explain how spoofing works to DEF
representatives and convincing them that this attack was indeed
spoofed. If the blacklist is a public blacklist, you would complain to
the owner/maintainer of the blacklist.

As an email admin you should monitor public blacklists to alert you
if/when IPs belonging to your company get added to one and then
respond as warranted. If you are a trusted partner of DEF or do
business with them, you may be able to convince them to whitelist the
IP address(es) of your mail server(s) since IP addresses of
uncompromised hosts cannot be spoofed in smtp transactions.

Aarjav

On Feb 7, 2008 2:27 PM, J. Lion <jv4l1n4 () gmail com> wrote:
Scenario
Bad Guy(s) spoof Company ABC email and launch spam on members of
popular search engine and online email provider (Company DEF)
Spammed DEF members reported the spam
Company DEF respond by looking up Company ABC's IPs and blacklisted
them (instead of offending IP address(es))

Questions
How do you get Company ABC off DEF blacklist?
How do you prevent Company ABC from getting blacklisted again?


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