North American Network Operators Group

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Re: Distributed Dictonary email slam

  • From: Matt Hess
  • Date: Mon Sep 06 01:21:55 2004


Impossible as the customer does not wish to give us a list.
However, I have thought of that and created some perl foo to go through.. identify the queued junk and remove it completely from our queue .. thus no bounce and no delivery.



Christopher X. Candreva wrote:


On Sun, 5 Sep 2004, Matt Hess wrote:


source hosts.. Now being as we are a secondary mx I'm dropping their record
out of our email system as I write this, however, I am curious if other have
gone through or are currently going through something of this magnitude (12K
spam/dictionary msgs per hour destined to one domain and that's just what is


You want to keep a list of valid accounts on the secondary so you can refuse mail for non-existing accounts on the secondary too.

If you don't care about yourself -- relize that if, say, all of these mails have a return address forged from the same domain, you will be DOSing THAT site with the bounce messages. This is enough for some people to block mail from you.


========================================================== Chris Candreva -- [email protected] -- (914) 967-7816 WestNet Internet Services of Westchester http://www.westnet.com/