[73823] in North American Network Operators' Group
Re: Distributed Dictonary email slam
daemon@ATHENA.MIT.EDU (Christopher X. Candreva)
Sun Sep 5 19:58:48 2004
Date: Sun, 5 Sep 2004 19:58:06 -0400 (EDT)
From: "Christopher X. Candreva" <chris@westnet.com>
To: nanog@merit.edu
In-Reply-To: <413B87A6.5080909@solarius.org>
Errors-To: owner-nanog-outgoing@merit.edu
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 -- chris@westnet.com -- (914) 967-7816
WestNet Internet Services of Westchester
http://www.westnet.com/
