My standard DNS forwards to cloud9 (9.9.9.9) because cloud9 blocks bad actors. But that means that DNSBL from spamhaus doesn’t work as the query to comes from a public DNS server.
I am using: # Drop any SMTP client that talks before its turn (spam botnets in a hurry) postscreen_greet_action = drop # Drop any SMTP client that is in the DNSBL postscreen_dnsbl_sites = zen.spamhaus.org*2 postscreen_dnsbl_action = drop I have a secondary resolver that doesn’t forward to cloud9. Can I use that local DNS instead of the standard one in postfix, preferably for postscreen DNSBL only? Gerben Wierda (LinkedIn <https://www.linkedin.com/in/gerbenwierda>) R&A Enterprise Architecture <https://ea.rna.nl/> (main site) Book: Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/> Book: Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/>
