Spam detection rates

[Randal, Phil]

We have a zealous bunch of users who love reporting spam which gets
through to their inboxes to me.

And I do spot checks of our Mailwatch logs from time to time.

About 3000 emails get flagged as low-scoring (possible) spam here, and
delivered.  Of those around 80% are spam, the rest are what I call
"subscriber spam" - special offers mailing lists, etc.

Cheers,

Phil

--
Phil Randal
Network Engineer
Herefordshire Council
Hereford, UK  

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info 
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf 
> Of Pete Russell
> Sent: 02 May 2007 15:00
> To: MailScanner discussion
> Subject: Re: Spam detection rates
> 
> I dont see how its possible to measure. Unless users report (and you 
> count) every single spam they receive that they shouldnt have.
> 
> I can tell you that my systems cathc more FPs and less spam than they 
> did 6 months ago. Maybe its a sing i need fuzzy ocr and greylisting?
> 
> Hope the new MS and SA this month will cure some of it.
> 
> 
> Randal, Phil wrote:
> > We consistently get over 99.5% of spam too.
> > 
> > Last month we blocked around 260,000 at the sendmail level
> > (cbl.abuseat.org RBL and GreetPause), and 400,000 in MailScanner.
> > 
> > Spam seems to be around 75% of total emails here.
> > 
> > Cheers,
> > 
> > Phil
> > --
> > Phil Randal
> > Network Engineer
> > Herefordshire Council
> > Hereford, UK  
> > 
> >> -----Original Message-----
> >> From: mailscanner-bounces at lists.mailscanner.info 
> >> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf 
> >> Of Gareth
> >> Sent: 02 May 2007 13:26
> >> To: mailscanner at lists.mailscanner.info
> >> Subject: Spam detection rates
> >>
> >> I was wondering what sort of detection rates people are 
> getting when
> >> using Mailscanner.
> >> Our old spamassassin 2.64 based system was only getting 
> about 80% but
> >> with Mailscanner and the latest software we seem to be getting over
> >> 99.5% which is extremely good. False positives are very low aswell.
> >>
> >> We do tend to be very strict about pictures attached to emails as I
> >> think we have a few rules which do the same sort of checks. Some
> >> external people using the incredimail 'piece of cr**p' mail 
> >> client get a
> >> continuous score about 4.3 which leaves the AWL little room 
> >> to bring the
> >> occasional higher scoring mail back below the 5.0 
> threshold. It hasn't
> >> caused any people to complain though.
> >>
> >> -- 
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> >>
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> >>
> >> Support MailScanner development - buy the book off the website! 
> >>
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> 
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>