I'm running the CentOS7/Plesk Onyx Google Cloud server. I configured the Mail settings in the GUI to use these DNS blackhole lists: sbl.spamhaus.org;xbl.spamhaus.org
However, in the mail logs I never see any filtering being done by them. I can see the appropriate setting in the /etc/postfix/main.cf file:
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_rbl_client sbl.spamhaus.org, reject_rbl_client xbl.spamhaus.org
I'm running postfix sending...
DNS blackhole lists not working on Google Cloud Server
However, in the mail logs I never see any filtering being done by them. I can see the appropriate setting in the /etc/postfix/main.cf file:
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_rbl_client sbl.spamhaus.org, reject_rbl_client xbl.spamhaus.org
I'm running postfix sending...
DNS blackhole lists not working on Google Cloud Server