Filtros de spam para postfix

[rodrigomezetti]

Bom dia pessoal do underlinux!1

Tenho postfix na empresa odne trabalho e to precisando implantar lagums filtros de spam pq tenho recebido varios por dia. alguem pode me ajudar ai a efetuar esta configuração?
alguns link ou tutorial ja me ajuda muito.

[WhiteTiger]

Use o SpanAssassim

http://www.forumdebian.com.br/viewtopic.php?p=14

[tcheturbo]

Veja a solução com greylist e a sorbs, juntando isso com spf solução de 98% de bloqueio de spam.

http://www.postfix.org/SMTPD_POLICY_README.html -> greylist

mais algumas dicas no main.cf
smtpd_recipient_restrictions =
reject_invalid_hostname,
reject_non_fqdn_hostname,
reject_non_fqdn_sender,
reject_non_fqdn_recipient,
reject_rbl_client dnsbl.sorbs.net,
reject_rbl_client sbl-xbl.spamhaus.org,
reject_rbl_client bl.spamcop.net,
reject_rbl_client smtp.dnsbl.sorbs.net,
reject_rbl_client web.dnsbl.sorbs.net,
reject_rbl_client spam.dnsbl.sorbs.net,
reject_rbl_client block.dnsbl.sorbs.net,
reject_rbl_client zombie.dnsbl.sorbs.net,
reject_rbl_client badconf.rhsbl.sorbs.net,
reject_rbl_client nomail.rhsbl.sorbs.net