Date: Wed, 11 Dec 2002 08:26:09 +0100 From: Brad Knowles <brad.knowles@skynet.be> To: JacobRhoden <f3z@iprimus.com.au> Cc: Cliff Sarginson <cls@raggedclown.net>, freebsd-chat@freebsd.org Subject: Re: Spam decisions Message-ID: <a05200f1bba1c98864655@[10.0.1.2]> In-Reply-To: <200212111158.57263.f3z@iprimus.com.au> References: <20021210073508.GB73284@raggedclown.net> <1649916519.20021210235811@dds.nl> <20021211005553.GB495@raggedclown.net> <200212111158.57263.f3z@iprimus.com.au>
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At 11:58 AM +1100 2002/12/11, JacobRhoden wrote:
> Either that, or the clever spam people are just brute force spaming all
> possible email addresses @hotmail.com... thats what I assumed spammers would
> do.... but still....
Indeed, that is exactly what many of them do now -- just send
spam to every possible address, and know that some small percentage
will accidentally hit a real account.
You can help them quickly identify valid e-mail accounts if your
mail server does interactive validation of recipient addresses.
Doesn't take very long to quickly spin through hundreds of addresses
per minute (or second) and find out who all the various valid e-mail
addresses are at your site. They can then make money by selling that
list to other spammers.
--
Brad Knowles, <brad.knowles@skynet.be>
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, Historical Review of Pennsylvania.
GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E-(---) W+++(--) N+
!w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++)
tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++)
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