MASS EMAIL bypass BLACKLIST?

[AFH Security <security () afallenhope com>]

Hey guys,

I was wondering if there was a way of bypassing blacklist and spam filters?
I keep receiving emails from a domain and I've blocked the ip from my 
server as well as blacklisted the email but for some reason they keep 
getting through. I'm guessing they're using a DNS with a low ttll with a 
botnet? (Yes kinda like the movie Untraceable).
That'd be awesome if I could get some form of a response.

------------------------------------------------------------------------
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate.  We look at how SSL works, how 
it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, 
install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are 
highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1
------------------------------------------------------------------------