Re: SpamAssassian with FreeBSD and Big Mail Server

From: Suporte Matik (asstec_at_matik.com.br)
Date: 02/24/05

  • Next message: dima: "Re[2]: SpamAssassian with FreeBSD and Big Mail Server" 
    To: freebsd-isp@freebsd.org
Date: Thu, 24 Feb 2005 08:16:22 -0300

    On Thursday 24 February 2005 06:32, Christian Damm wrote:
    > thomas@hkeasyhost.com schrieb:
    > > I would like to try dspam as well as I am using spamassassin, but dspam
    > > are leak of docs on postfix supporting, and no one got experience with
    >
    > i can encourage you to do so - you wont regret it: the statistical spam
    > filtering methods in dspam are miles ahead spamassassin`s (spamassassin
    > on the other hand is an antispam framework where so many things can be
    > done (rbl`s, razor, dcc, spf etc.) - i do things like rbl checking
    > (wirespeed) on the smtp level with postfix so i dont mind.
    > the postfix integration is dead-easy, really. the dspam docs could be
    > better but the dspam mailinglist is quite helpful if you got questions.
    > also consider using one of the many postfix/dspam/etc. howto`s out there:
    >

    I am not so sure here
    I tried several different setups of Dspam and on small test servers 100 users
    or so it actually worked but even so the false-positive rate was very high,
    actually too high.
    But another test server with only 2000 user dspam is lost already and it
    didn't matter which store method I tried out, even a MySQL for it only. It
    runs a day or two but soon a spam wave comes in message delivery time grows
    up, memory goes up, the queue fills the disks and swap is eaten until the
    server goes down on his knees. When I tried to get some numbers nobody
    answered clearly and I only hear ohh I have lots of users but I never saw
    something real.

    spamassassin on the other side with good rules maintanance is hitting fine, I
    get almost no false-positives and almost all spam is correctly identifies
    which we drop into a spam folder with procmail. That is cool, no memory
    excess and absolutly stable and reliable.

    Hans

    > http://devnull.com/kyler/dspam.20040609.html
    >
    > > dspam+Spamassassin together, so...
    >
    > the latest amavisd-new versions got dspam support - anyway its a little
    > bit "hacky" at the moment i.m.h.o, so i wouldnt really use it on
    > production hosts (some might disagree in small mta environments).
    >
    > >>Vahric MUHTARYAN schrieb:
    > >>>Hi Everybody ,
    > >>>
    > >>> Really I don't know can I say a big mail server which have
    > >>>30,000 mailbox on it 1200+ simultaneously connections
    > >>>(pop,smtp,webmail).
    > >>>Ýncoming smtp connections are between 200-400 . We want to run spam
    > >>>software
    > >>>on it but machine can't handle it for this reason we seperated machine
    > >>>freebsd+exim+SpamAssassian but on 400 connection machine goes down
    > >>>average
    > >>>is very high , cpu usage really too high .
    > >>>
    > >>> I want to learn Anybody Who have closer or bigger system and
    > >>>using SpamAssassian ?!
    > >>>Really this 400 connection simultaneously can be limit for spam software
    > >>>?!
    > >>>I mean Anybody can handle more ?!
    > >>>I have to design distributed environment ?!
    > >>>
    > >>>My Hardware is (for spam)
    > >>> 2 X PIII 1G + 1 GB RAM + 2 DISK RAID 0 SCSI 10000 RPM
    > >>
    > >>i use spamassassin only on small-/medium-sized MTA installations (its a
    > >>memory/cpu hog i.m.h.o. but i like it) - on all my "bigger" systems i
    > >>really prefer dspam (coded in straight C and fast as hell). it is used
    > >>in some environments with 350,000 email users and scales really well (if
    > >>you have the iron and experience to build/maintain such a
    > >> system/cluster).
    > >>
    > >>http://www.nuclearelephant.com/projects/dspam/
    > >>
    > >>>Thanks
    > >>>Vahric
    > >>>
    > >>>_______________________________________________
    > >>>freebsd-isp@freebsd.org mailing list
    > >>>http://lists.freebsd.org/mailman/listinfo/freebsd-isp
    > >>>To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"
    > >>
    > >>--
    > >>
    > >>mfg.
    > >>
    > >>christian damm
    > >>technische leitung
    > >>phone: dw 42
    > >>email: christian.damm@diewebmaster.at
    > >>icq at work: 124464652
    > >>
    > >>die webmaster - flötzerweg 156 - 4030 linz - austria
    > >>phone: +43-732-381242, fax: +43-732-381242-22, isdn (leonardo):
    > >>+43-732-381242-33
    > >>homepage: www.diewebmaster.at, public email: office@diewebmaster.at
    > >>_______________________________________________
    > >>freebsd-isp@freebsd.org mailing list
    > >>http://lists.freebsd.org/mailman/listinfo/freebsd-isp
    > >>To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"
    > >
    > > !DSPAM:421d64a4175283000910921! 

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