Spamhaus Project Public Mirrors using Postfix

Configuration

To correctly configure Postfix, make changes to the main.cf file. Open the file and locate (or create) the section smtpd_recipient_restrictions. Configure it as follows:

smtpd_recipient_restrictions =
    ...
    reject_rbl_client zen.spamhaus.org=127.0.0.[2..11]
    reject_rhsbl_sender dbl.spamhaus.org=127.0.1.[2..99]
    reject_rhsbl_helo dbl.spamhaus.org=127.0.1.[2..99]
    reject_rhsbl_reverse_client dbl.spamhaus.org=127.0.1.[2..99]
    warn_if_reject reject_rbl_client zen.spamhaus.org=127.255.255.[1..255]
    ...