jeff on 1 Apr 2009 06:54:10 -0700

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Re: [PLUG] OT: spammer's DNS

Art Alexion wrote:
> Real mail stopped going to the old server in about 48 hours, but spam still 
> goes there.  Can anyone help explain how the DNS servers that spammers use 
> differ, and why this happens?

Not sure, but it definitely helps with spam filtering.  When people 
leave or are terminated, you can figure most or all of their mail is 
spam (after a certain point).

I still think the only effective way to filter spam personally is to 
block everything by default and whitelist what you want to get through. 
  Of course I still have the scars from the last time I mentioned this 
here so I won't say much more.  It's also worthless as a business solution.

ThermionicEmissions  -  the blog

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