Re: SPAM Filtering

[Joseph Begumisa <begj at psg.com>]

On Mon, 4 Nov 2002, DOSSOU Franck Lucky wrote:

> HI!
> How can I enable smtpd_restrictions on postfix to block spamming mails?
> I've already used amavis with Mcafee Antivirus to check viruses.It seem's
> that smtpd_restrictions don't work after amavis scan mail!
> Why?

I recommend integration of amavis & your virus scanning software with
SpamAssassin.  This would check on both viruses and spam.  SpamAssassin
can be obtained from www.spamassassin.org.  You would be better off using
amavisd-new which can be obtained from http://www.ijs.si/software/amavisd/
It will make this integration a whole lot easier.

The combination of the above and the various smtpd_*_restrictions will
deal with most of the spam. However, note that there is an order in which
the restrictions should be listed.  This document at
http://www.mengwong.com/misc/postfix-uce-guide.txt gives an insight to
that.

Joseph

 > my main.cf > ---------- >
> # Notre configuration pour Amavis
> content_filter = vscan:
> # anti spam
> header_checks = regexp:/etc/postfix/header_checks
> body_checks = regexp:/etc/postfix/body_checks
>
> maps_rbl_domains = relays.ordb.org, sbl.spamhaus.org,
>         spamsites.relays.osirusoft.com, relays.visi.com,
>         korea.services.net, rbl.oxymium.net,
>         proxies.relays.monkeys.com
>
> smtpd_helo_required = yes
> smtpd_recipient_restrictions = regexp:/etc/postfix/forbid_from,
>         reject_unauth_pipelining, permit_mynetworks,
>         reject_unauth_destination, reject_non_fqdn_sender
>         reject_maps_rbl,check_relay_domains
> smtpd_etrn_restrictions = permit_mynetworks
> smtpd_client_restrictions = reject_maps_rbl
>
> my master.cf
> ------------
> smtp      inet  n       -       y       -       -       smtpd
> # Notre Config pour Amavis
> vscan  unix  -       n       n       -       10     pipe user=vscan
>   argv=/usr/sbin/amavis ${sender} ${recipient}
> localhost:10025     inet  n      -      n      -      -      smtpd
>   -o content_filter=
>
> kinds regards
>
>
> --------------------------------------------- at :-)
> DOSSOU Franck Lucky
> Chef Section Plateforme NTIC
> Office des Postes et Télécommunications du BENIN
> BP 5959 Cotonou
> BENIN
> Tel : 31 88 88 / 91 74 33
>
>
>
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>
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