[FUG-BR] Caindo em RBL.

[junior em gujao.com]

Bom dia,

Pessoal, estou tendo problemas com spammers usndo meu smtp para enviar
emails e com isso, veno caindo frequentemente em listas RBL.
Essa é a configuração do meu postfix:

#main.cf
broken_sasl_auth_clients = yes
smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks
smtpd_recipient_restrictions =
  permit_mynetworks,
  permit_sasl_authenticated,
  reject_non_fqdn_hostname,
  reject_non_fqdn_sender,
  reject_non_fqdn_recipient,
  reject_unauth_destination,
  reject_unauth_pipelining,
  reject_invalid_hostname,
  reject_rbl_client list.dsbl.org,
  reject_rbl_client bl.spamcop.net,
  reject_rbl_client sbl-xbl.spamhaus.org
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_security_options = noanonymous

# =======MAILDROP ==========
fallback_transport = maildrop
maildrop_destination_recipient_limit = 1
unknown_local_recipient_reject_code = 450

Existe mais alguma configuração que eu possa fazer para fazer alguns
bloqueios ?

Grato.