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Re: [vox-tech] spam current events
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Re: [vox-tech] spam current events

On Thursday 31 August 2006 03:48 pm, Alex Mandel 
tech_dev-at-wildintellect.com |lugod| wrote:
> I used a program once, oddly enough it seems like a spammers tool,
> called worldcast. It allowed my to verify that addresses on my list were
> valid through a multi step check which included hitting the email server
> and confirming the account existed.
> Is there someway to turn this concept into filtering an email based on
> whether the sender validated as a real email address that exists on a
> real domain.
> It seems like a lot of spam spoofs who it's from or in fact has
> addresses that really don't exist at all.
> I admit I may be a little naive in how this all works, just poking around.
> Alex

Exim can do this, and calls it callout verification.  It's not really advised 
for use, though, and some email providers will blacklist you for using it 
(AOL, probably others)

Ryan Castellucci - http://ryanc.org/
GPG Key: http://ryanc.org/files/publickey.asc
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