Postfix mailserver using Google DNS vs Spamhaus

Here’s something to be aware of if you’re running a Postfix (or possibly any mailserver), use Spamhaus, and are considering or have switched to Google DNS: 1. Spamhaus has banned Google Public DNS resolver queries. I didn’t know this until today. If Postfix is using Google Public DNS resolvers, rbl queries to zen.spamhaus.org fail but […]