Re: SpamAssassian with FreeBSD and Big Mail Server

From: Christian Damm (christian.damm_at_diewebmaster.at)
Date: 02/24/05

  • Next message: Ion-Mihai Tetcu: "Re: SpamAssassian with FreeBSD and Big Mail Server" 
    Date: Thu, 24 Feb 2005 15:14:28 +0100
To: Ion-Mihai Tetcu <itetcu@people.tecnik93.com>

    Ion-Mihai Tetcu schrieb:
    > On Thu, 24 Feb 2005 05:36:24 +0100
    > Christian Damm <christian.damm@diewebmaster.at> wrote:
    >
    >
    >>
    >>Ion-Mihai Tetcu schrieb:
    >>
    >>>On Wed, 23 Feb 2005 14:51:28 +0100
    >>>Christian Damm <christian.damm@diewebmaster.at> wrote:
    >>>
    >>>
    >>>
    >>>>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/
    >>>
    >>>
    >>>Also in ports: mail/dspam and mail/dspam-devel (updates for both in not
    >>>committed PRs).
    >>>
    >>>I'm currently playing with a setup like OP's. I'm interested in knowing
    >>>our definition of "iron and experience to build/maintain such a
    >>>system/cluster".
    >>
    >>your definition? - or my definition? ;-)
    >
    >
    > :-) sorry, typo. Yours. And while we're at definitions - what's small /
    > medium and what's big :-) ?

    small: 1 > 10000
    medium: 10000 > 100000
    big: 100000 > ...
    (i.m.h.o - it depends on who is looking at this)

    iron: im not a big fan of big "bloated" boxes in mailserver environments
    (sun`s and "mainframe" kind of stuff) - multiple fine tuned and
    carefully built x86 hosts (non SMP single CPU machinmes) running freebsd
    are all you need and they get cheaper every day... ;-)

    what kind of system-size/scalability you are after? - i also have to say
    that the number of email users is not the primary problem when
    scalability comes up - even more it is the "what kind of users you
    got/what kind of services you offer" question...one of my friends
    maintains a "small" MTA cluster with 9000 email users (many heavy power
    users, mx for very well known domainnames -> as drawback much spam and
    viruses/worms etc.), his 9000 user cluster (2 redundant (hot failover)
    dedicated load balancers, 3 inbound mail relays running postfix, 2
    tpop3d backends, 2 av/antispam hosts, 2 redundant mysql hosts (hot
    failover and a netapps filer (i think a 760?!))) has most of the time
    much more load than standard isp systems handling around 50k to 100k
    userbases (mostly standard home users).

    >
    >
    > 

    -- 
mfg.
christian damm
technische leitung
phone: dw 42
email: christian.damm@diewebmaster.at
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