Spam protection based on DNS blackhole lists

Amadex

Hello, there's a nice option in Plesk and I would like to see it in Enhance panel for Email Settings.

niels

DracoBlue

MediaServe

You can do this already with cPFence FWIW. Manually of course, but could be easily done with a weekly cron job.

`cpfence --bulk-del-wl-ip URL_OR_FILE Bulk Delete IPs in URL/FILE from whitelist.(e.g., cpfence --bulk-del-wl-ip https://a.com/file.txt )

cpfence --bulk-del-bl-ip URL_OR_FILE Bulk Delete IPs in URL/FILE from blacklist.(e.g., cpfence --bulk-del-bl-ip /PATH/TO/FILE )`

hwcltjn

+1 - We've been asking for this for a while and RBL's are a basic feature in rspamd, spamd, and most mail servers.

FabioP

+1 for me.

kyzoeadmin

franco

Shaijee

MDG

j36digital

marowi

rgazetta

This can be easily inserted into postfix in /etc/postfix/main.cf

smtpd_relay_restrictions =
               permit_sasl_authenticated,
               reject_invalid_hostname,
               reject_unknown_recipient_domain,
               reject_unauth_pipelining,
               reject_unlisted_sender,
               permit_mynetworks,
               reject_unauth_destination,
               permit_dnswl_client hostkarma.junkemailfilter.com=127.0.0.1,
               reject_rbl_client hostkarma.junkemailfilter.com=127.0.0.2,
               reject_rhsbl_sender dsn.rfc-ignorant.org,
               reject_rbl_client zen.spamhaus.org=127.0.0.[2..11],
               reject_rbl_client bl.spamcop.net,
               reject_rbl_client dnsbl.sorbs.net,
               reject_rbl_client cbl.abuseat.org=127.0.0.[2..11],
               reject_rbl_client b.barracudacentral.org,
               reject_rbl_client dnsbl-1.uceprotect.net,
               reject_rbl_client dnsbl.spfbl.net,
               permit_dnswl_client list.dnswl.org=127.0.[0..255].[1..3],
               reject_non_fqdn_hostname,
               reject_unknown_reverse_client_hostname,
               permit


smtpd_sender_restrictions =
        reject_unknown_sender_domain,
        reject_unlisted_sender,
        permit