Unbound

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Configuring Unbound as a Recursive DNS Resolver with systemd-resolved
ByPieter Bakker 16/10/202516/10/2025
When operating a mail server such as Postfix, DNS lookups play a crucial role in message delivery and spam detection. Postfix often performs frequent DNSBL (DNS-based Blacklist) queries to identify spam sources, and relying on public DNS resolvers for these lookups can quickly become a problem. Many public DNS providers, including Google and Cloudflare, intentionally…
Read More Configuring Unbound as a Recursive DNS Resolver with systemd-resolved

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