GreenArrow Documentation


GreenArrow Engine can optionally use DNSBLs (DNS-based Blackhole Lists), such as the ZEN Spamhaus List to filter incoming mail.

  1. To control which DNSBLs to use, list them one per line in the /var/hvmail/control/smtp.rbls file. For example:

    echo "" >> /var/hvmail/control/smtp.rbls

  2. To disable checking DNSBLs, delete the /var/hvmail/control/smtp.rbls file:

    rm -f /var/hvmail/control/smtp.rbls

  3. Apply changes by restarting the SMTP service, and verifying that it stays up for at least 5 seconds:

    svc -t /service/hvmail-qmail-smtpd
    sleep 7
    svstat /service/hvmail-qmail-smtpd

    If the SMTP service does not stay up for at least 5 seconds, reverse your change.