975 B
975 B
Enable DNSBL service in Postfix to reduce spam
You can enable additional DNSBL services in Postfix to reduce spam. We use
zen.spamhaus.org
for example below.
- Open Postfix config file
/etc/postfix/main.cf
or/usr/local/etc/postfix/main.cf
(on FreeBSD), appendreject_rbl_client zen.spamhaus.org
to parametersmtpd_recipient_restrictions
. Final setting looks like below:
smtpd_recipient_restrictions = ..., reject_unauth_destination, reject_rbl_client zen.spamhaus.org
It must be placed after reject_unauth_destination
. You can add more DNSBL
services after reject_unauth_destination
, and they will be queried in the
specified order.
- Restart or reload Postfix service is required.