Date: Thu, 24 Feb 2005 15:14:28 +0100 From: Christian Damm <christian.damm@diewebmaster.at> To: Ion-Mihai Tetcu <itetcu@people.tecnik93.com> Cc: freebsd-isp@freebsd.org Subject: Re: SpamAssassian with FreeBSD and Big Mail Server Message-ID: <421DE144.3050705@diewebmaster.at> In-Reply-To: <20050224140023.35d627dd@it.buh.tecnik93.com> References: <20050223110037.177AB43D2F@mx1.FreeBSD.org> <421C8A60.8010407@diewebmaster.at> <20050224004857.7413d567@it.buh.tecnik93.com> <421D59C8.2080209@diewebmaster.at> <20050224140023.35d627dd@it.buh.tecnik93.com>
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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 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
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