Date: Fri, 25 Feb 2005 11:24:55 +0100 From: Christian Damm <christian.damm@diewebmaster.at> To: Suporte Matik <asstec@matik.com.br> Cc: "freebsd-isp@freebsd.org" <freebsd-isp@freebsd.org> Subject: Re: SpamAssassian with FreeBSD and Big Mail Server Message-ID: <421EFCF7.3090303@diewebmaster.at> In-Reply-To: <200502240816.27991.asstec@matik.com.br> References: <20050223110037.177AB43D2F@mx1.FreeBSD.org> <46881.147.8.2.201.1109222551.squirrel@147.8.2.201> <421D9F49.8060309@diewebmaster.at> <200502240816.27991.asstec@matik.com.br>
next in thread | previous in thread | raw e-mail | index | archive | help
Suporte Matik schrieb: > 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. my false positive rate is around 0.01% - and we are talking >50k userbases here. if you need some out-of-the-box solution SA is fine - thats not what dspam really was made for. in the long run dspam is much more reliable/scaleable. but agreed, dspam requires some real tweaking and RTFM... http://www.nuclearelephant.com/projects/dspam/howtotest.txt > 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 mysql is really a must when it comes to dspam - the pgsql support is ok, but bdb sucks! i dont blame dspam for that, bdb is the pig here. agreed, running dspam as your only weapon against spam can really load your boxes in medium sized environments - but there are many possibilities to tune dspam for high load. > 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. i give you all the numbers you want - just ask. ;-) > > 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. 1.) procmail is slow (even maildrop is, altough its 3 times faster) 2.) you have to maintain your SA ruleset 3.) SA is a perl bloat (anyway - i like it) - thats also one of the reasons i want to drop amavisd-new off my boxes when i find a good alternative... > > > 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! > > > > ------------------------------------------------------------------------ > > !DSPAM:421db801170271219614910! -- 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?421EFCF7.3090303>