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265218Retriction order - a little advice please

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  • Paul Hutchings
    May 1, 2010
      Just doing a bit of a sanity check/tidy-up on my Postfix box, I've not
      had to go near it for ages as it all just works, but I'm checking a few
      other things and I'm slowly reminding myself of various Postfix related

      These are my current restrictions, I think the map names are indicative
      of what they do. I'd appreciate any tips on streamlining/optimizing
      these - for example I know the DKIM one is where it is because it has to
      kick in before "permit_mynetworks" so it triggers even if it's spam and
      the mail is then rejected by a further check such as SPF.

      The box is an internet facing relay.

      smtpd_recipient_restrictions =
      check_client_access hash:/etc/postfix/client_blacklist,
      check_sender_access hash:/etc/postfix/sender_blacklist,
      # Call dkim proxy to sign mail from @ourdomain
      check_sender_access hash:/etc/postfix/dkim_sign
      check_client_access hash:/etc/postfix/client_whitelist,
      check_sender_access hash:/etc/postfix/sender_whitelist,
      check_sender_access hash:/etc/postfix/trusted_domains,
      check_helo_access regexp:/etc/postfix/helo_checks.regexp,
      reject_rbl_client zen.spamhaus.org,
      reject_rhsbl_client multi.uribl.com,
      reject_rhsbl_sender multi.uribl.com,
      reject_rhsbl_sender multi.surbl.org,
      reject_rhsbl_client multi.surbl.org,
      check_policy_service unix:private/spf,
      check_client_access regexp:/etc/postfix/greylist_dyn_fqdn.regexp,
      check_client_access regexp:/etc/postfix/greylist_hosts.regexp,


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