Heinrich,
How are you determining your detection rates? Are you using a
combination of certain tests or overall test percentages? Thanks for
the time.
Keith
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Heinrich
Richter
Sent: Friday, April 01, 2005 10:57 AM
To: Declude.JunkMail@declude.com
Subject: Re: Re[2]: [Declude.JunkMail] Huge reduction in hold queue
Hello Darin,
it seems that i got a lot of the mails you are missing ;-(
Our volume increased about 25% last month and the number of SPAM
increased about 64%.
Our spam detection rate is about 98% and the overall spamrate has
incresed from 40% to 50% last month.
Heinrich
----- Original Message -----
From: "Darin Cox" <[EMAIL PROTECTED]>
To: <Declude.JunkMail@declude.com>
Sent: Friday, April 01, 2005 4:47 PM
Subject: Re: Re[2]: [Declude.JunkMail] Huge reduction in hold queue
> Just as a followup, I have confirmed that we have had a 15%+ drop in
> incoming volume. If that is mostly spam, then that would indicate
almost
> a
> 20% drop in spam. If most of that is in our hold range (about 40% of
> incoming spam ends up in our hold queue), then it could account for
half
> or
> more of the drop in held spam.
>
> Also, we're definitely seeing a significant increase in detection
rates
> for
> the tests listed below, so a lot less is ending up in our hold queue,
> despite raising the delete limit.
>
> Anyone else seeing a similar drop in incoming spam and an increase in
> detection rates for the tests listed below?
>
> Darin.
>
>
> ----- Original Message -----
> From: "Darin Cox" <[EMAIL PROTECTED]>
> To: <Declude.JunkMail@declude.com>
> Sent: Thursday, March 31, 2005 10:56 AM
> Subject: Re: Re[2]: [Declude.JunkMail] Huge reduction in hold queue
>
>
> You know, I think was misleading/inaccurate in how I said it. I really
> meant
> accuracy, not detection rate. I was thinking detection rate as the
number
> of messages detected as spam by the test that were actually spam, but
I
> should have said accuracy. Sorry for the confusion...language is a
funny
> thing...
>
> These are the best tests we run, in terms of catching the most spam,
but
> they're not catching at the percentages below. There are others that
are
> highly accurate as well, but these catch the most volume.
>
> My apologies again for the confusion.
>
> Darin.
>
>
> ----- Original Message -----
> From: "Pete McNeil" <[EMAIL PROTECTED]>
> To: "Darin Cox" <Declude.JunkMail@declude.com>
> Sent: Thursday, March 31, 2005 10:36 AM
> Subject: Re[2]: [Declude.JunkMail] Huge reduction in hold queue
>
>
> On Thursday, March 31, 2005, 9:50:05 AM, Darin wrote:
>
> DC> That is very significant, and could explain what I'm seeing. I'm
> going
> to
> DC> increase my delete weight a bit for a while to make sure there are
no
> high
> DC> FPs.
>
> DC> I do see the following detection rates from yesterday (3/30)
>
> DC> AHBL 97.4%
> DC> CBL 99.9%
> DC> CSMA 97.1%
> DC> CSMA-SBL 93.4%
> DC> JAMMDNSBL 76.0%
> DC> PSBL 96.9%
> DC> SBL 99.5%
> DC> SENDERDB-BL 96.4%
> DC> SNIFFER 98.7%
> DC> SPAMCOP 99.7%
> DC> UCEPROTECT1 100%
> DC> UCEPROTECT2 97.2%
>
> DC> rates for all seem to have increased significantly over the past
> couple
> of
> DC> days.
>
> WOW! That's weird. I do not show that at all and I've never seen those
> tests throw those kinds of numbers (except SNF looks about right):
>
> http://www.sortmonster.com/MDLP/MDLP-Example-Short.html
>
> For example (a quick spot check) -
>
> Data through last noon to midnight--
>
> AHBL shows up at about 22% (21.8409)
> SPAMCOP shows up at about 64% (63.5114)
> UCEPROTECCMUL sows up at about 42% (41.6237)
> UCEPROTECRDO shows up at about 48% (48.0324)
>
> Long range data through last midnight--
>
> AHBL shows up at about 16% (16.111)
> SPAMCOP shows up at about 62% (62.3942)
> UCEPROTECCMUL shows up at about 42% (41.7421)
> UCEPROTECRDO shows up at about 49% (48.6102)
>
> All in all these indicate nominal performance.
>
> Most likely there is something special about the mix of spam you are
> getting, something wrong with your reporting process, or something
> else going on that we haven't thought of.
>
> To be thorough I also checked some of the MDLP reports from other
> systems that are beta testing it. With few exceptions they show
> numbers similar to mine w/ regard to these tests.
>
> If I were you I would not make any substantive changes until I tracked
> down what was going on. No need to introduce additional variables by
> changing things ;-)
>
> DC> BTW, I sent to the Junkmail in part so others could comment on
> DC> other tests that may have significantly changed.
>
> It's all good :-)
>
> _M
>
>
>
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