Date: Fri, 25 Feb 2005 10:52:49 +0100 From: Christian Damm <christian.damm@diewebmaster.at> To: Suporte Matik <asstec@matik.com.br> Cc: freebsd-isp@freebsd.org Subject: Re: SpamAssassian with FreeBSD and Big Mail Server Message-ID: <421EF571.40101@diewebmaster.at> In-Reply-To: <200502250202.21232.asstec@matik.com.br> References: <20050223110037.177AB43D2F@mx1.FreeBSD.org> <20050224164327.56d29617@it.buh.tecnik93.com> <421DEC44.5030100@diewebmaster.at> <200502250202.21232.asstec@matik.com.br>
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Suporte Matik schrieb: > On Thursday 24 February 2005 12:01, Christian Damm wrote: > >>with _1_ tuned mid class x86 box with plenty of ram and fast i/o running >>freebsd and postfix, you could handle this for sure! - of course using >>every useful and available anti-spam possibility offered by postfix and >>rejecting as much as you can during the smtp session. i run one email >>gateway like this for a isp (around your size) on one extremely tuned >>std. x86 host (freebsd/postfix + all useful built-in antispam >>"wizardry"/amavisd-new/clamd/vexira/gld (greylist daemon)/dspam...of >>course no pop3/imap on this box - load is around 0.5 max. > > > Hi > you are running amavis + clamd + dspam on a normal PC for 30000 users? yes - without real load...it all depends on tuning the box/environment. amavisd/clamd/vexira (our second av scanner)/dspam dont get much mails delivered because of our extremely strict postfix anti spam config (mostily at the smtp level - BEFORE fully accepting the mail)...we block around 90-95% of junk at the doors and let the other (resource intensive) daemons/services do the final cleaning. also keep in mind that we are talking about an inbound antispam/virus gateway - no pop3/imap or stuff like that...drawback is: we cant integrate things like full av/spam quarantine into this system - but on the other hand we have an extremely low false positive rate (when it comes to RBL`s/DUL`s/RHSBL`s etc. im real "picky") - and greylisting also helps much (we use gld / http://www.gasmi.net/gld.html). > > Hans > > > > > > > > ------------------------------------------------------------------------ > > !DSPAM:421eb179139579563310554! -- 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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