Re: OT: Criminal Spammers
- From: "Ray Dzek" <rdzek@xxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Tue, 28 Oct 2003 10:59:47 -0800
Personally I don't care it if is 6 words. But I do know that SpamAssassin
has, even by conservative estimates (A research study reported on CNN stated
that each spam conservitively uses 10-30 seconds of an employees time),
saved over 1,600 labor-hours in the past year by identifiying the spam that
flows into our company. So far in the month of October we have deleted
56,955 spam, and tagged another 33,061 as probable spam for a grand total of
90,016 spam emails into the company so far this month. This is about 3x the
amount of spam we were getting in the first half of the year. So if you
take the 90,000 spam x 15 seconds wasted per spam / 60 / 60 = 375
labor-hours in the month of October. As a side note ..we had 54,500 "legit"
emails in the same period.
----- Original Message -----
From: "Thor" <thor@xxxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Tuesday, October 28, 2003 9:37 AM
Subject: [isalist] Re: OT: Criminal Spammers
> http://www.ISAserver.org
>
> Isn't that really two words?
>
> ----- Original Message -----
> From: "Ray Dzek" <rdzek@xxxxxxxxxxxxxxx>
> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
> Sent: Tuesday, October 28, 2003 9:03 AM
> Subject: [isalist] Re: OT: Criminal Spammers
>
>
> > http://www.ISAserver.org
> >
> > One word ... SpamAssassin.
> >
> > ----- Original Message -----
> > From: "Jim Harrison" <jim@xxxxxxxxxxxx>
> > To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
> > Sent: Tuesday, October 28, 2003 8:46 AM
> > Subject: [isalist] Re: OT: Criminal Spammers
> >
> >
> > > http://www.ISAserver.org
> > >
> > > Where does this lovely idea operate?
> > >
> > > Jim Harrison
> > > MCP(NT4, W2K), A+, Network+, PCG
> > > http://www.microsoft.com/isaserver
> > > http://isaserver.org/Jim_Harrison
> > > http://isatools.org
> > >
> > > Read the help, books and articles!
> > > ----- Original Message -----
> > > From: "Brian Drought" <brian@xxxxxxxxxxxx>
> > > To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
> > > Sent: Tuesday, October 28, 2003 08:35
> > > Subject: [isalist] Re: OT: Criminal Spammers
> > >
> > >
> > > http://www.ISAserver.org
> > >
> > > Jim,
> > >
> > > > ..of course, you could set up a content filter to drop anything like
> > > > "http://&#";, since no self-respecting business would be trying to
> sneak
> > > > around your spam filters, would they?
> > >
> > > I'm writing something that does just this. It also treats links with
> your
> > > email address in with some suspicion.
> > >
> > > Also, it decodes the email into words and then checks the validity of
> each
> > > word against a database of known words (some 400,000!). If the ration
of
> > > bad/good words is aboe a certain threshold in either subject or title
it
> > > bins the email.
> > >
> > > Also checks for invalid HTML (no </body> </html> tags etc, then for
> > > invisible text etc etc. Seems to pick out about 95% of what our GFI
> server
> > > is missing (with the latest list of keywords I grabbed from this
list!)
> > >
> > > Bri
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