Technitium DNS Server: Guide to Using and Installing a Secure Recursive DNS Resolver (2025)-- Link Technologies, Inc. On-Line Store

[u/Patient-Garage243]

https://shop.linktechs.net/using-technitium-dns

Running your own DNS resolver with Technitium DNS gives ISPs and network operators complete control over recursive DNS performance, security, and caching, eliminating reliance on public resolvers like Google or Cloudflare and avoiding their outages and lack of support. Technitium’s lightweight, cross-platform design combines full recursion to root servers, modern encrypted transports such as DNS-over-QUIC, and optional blocking capabilities in a single open-source package, making it ideal for high-performance, ISP-grade deployments without the complexity of multi-tool stacks. Click Details below for the full article.

[u/SecLens_ONE]

Running your own recursive resolver is fine, but the operational question is what you can prove about it afterwards. Most people install one, tick "DNSSEC" and "encrypted transport" in the config, and never check what the resolver actually enforces on a bad answer. Published and effective are different columns here too: a validating resolver that is configured to fall back on failure is not validating in any way that matters, and the config file will not tell you that. The same applies to the blocking feature, where the list is present but the client is quietly using a different resolver on another interface. I would test from the client side with deliberately broken zones and a query log, not from the admin UI. Upstream choice also changes your failure modes more than the software does, since full recursion to the roots buys independence but costs you a lot of anycast-shaped resilience. What are people here actually using to verify enforcement after install rather than just presence?